I believe Genesis describes God creating the world in six ordinary days. A reader with a serious question deserves more than a repeated assertion, so I want to explain why I read the passage that way. My reasons come from how Moses describes the days and how later Scripture refers to God’s creative work. Following those connections also helps us understand Adam and Eve, the entrance of sin and death, and the Savior who came to redeem us.
Christians who disagree with me should be able to understand my reasons without being treated with contempt. A firm conviction does not require assuming that everyone who reads the passage differently is trying to deny God.
God the Creator
Genesis begins by identifying who made everything:
In the beginning God created the heavens and the earth.
Genesis 1:1
The expression “The heavens and the earth” names the whole created order, so everything within it owes its existence to God. The Hebrew verb bara describes His creating work. Moses introduces God as the Maker of all things, whose own existence does not depend on a world or a system greater than Himself.
God said, “Let there be light,” and light came into being. He did not have to overcome a rival power or discover through trial and error how creation might work. His word accomplished what He intended, and the chapter ends with His judgment that everything He had made was very good.
Since God made us, we are accountable to Him. I cannot treat Him as someone whose advice I may consult while reserving the right to define good and evil for myself. He gives human life its purpose and tells us how to live. Genesis establishes the beginning to which Scripture returns when teaching about worship, work, marriage, and our need for redemption.
The Creation Days
The Hebrew word yom has a range of meanings. It can refer to daylight, a complete ordinary day, or a broader period in another setting. English does something similar when we say “in my grandfather’s day.” Knowing that range should lead us to examine the context, rather than choose whichever possible meaning suits our conclusion.
God called the light Day, and the darkness He called Night. So the evening and the morning were the first day.
Genesis 1:5
Here the light is called Day and the darkness Night. The complete first day is then marked by evening and morning. That pattern continues through the six numbered days of work. The combination of numbering and evening and morning leads me to understand ordinary days, rather than vast ages.
Moses has carefully arranged the chapter, but an orderly account can describe events in the order they happened. He records God speaking and carrying out His work through the repeated days of a week. I do not see a reason to treat that literary structure as canceling the sequence the words describe.
What About the Sun?
The first three days raise an understandable objection. If the heavenly lights were made on the fourth day, how could there have been ordinary days before then?
Genesis already describes light separated from darkness on the first day. God named Day and Night before He made the sun and moon and appointed their roles. We are not told the source of that first light, but we are told that God provided it and that evening and morning marked the days.
Then God said, “Let there be lights in the firmament of the heavens to divide the day from the night.”
Genesis 1:14
On the fourth day, God gave the lights their functions: dividing day from night, lighting the earth, and marking seasons, days, and years. Their appointment did not begin time, because three days had already been described. The sun, moon, and stars are created things serving God, not divine powers in their own right.
Genesis therefore challenges the worship of heavenly bodies as well as the belief that the universe exists independently of its Creator. When considering the first three days, I need to ask what God says He did, rather than make the discussion turn on whether He could have used a long process. His ability to provide light did not depend on the sun already being present.
The Sabbath Witness
Exodus 20 provides what I consider the strongest cross-reference. When God commanded Israel to work six days and rest on the seventh, He gave creation as the reason:
For in six days the LORD made the heavens and the earth, the sea, and all that is in them, and rested the seventh day.
Exodus 20:11
God connected Israel’s ordinary workweek with His completed week of creation. Their six days of work and seventh day of rest followed the pattern of His own acts. The command therefore rests on more than the usefulness of taking a day off. I find the correspondence between those two weeks much harder to explain if the creation days were meant to be long ages.
His rest does not imply exhaustion. He had completed the creative work and ceased from it, then blessed the seventh day. God’s completed week gave Israel the pattern for its actual calendar.
Created Life, Adam, and Eve
Within that creation week, God established living things that would reproduce according to their kinds:
Then God said, “Let the earth bring forth grass, the herb that yields seed, and the fruit tree that yields fruit according to its kind.”
Genesis 1:11
The same language applies to the creatures of sea, air, and land. I read it as God establishing kinds that continue through reproduction, preserving the order and boundaries He gave them. The Hebrew term is not a modern biological classification. Since Genesis does not identify the exact boundaries of each kind, we should not simply equate every biblical kind with one modern species.
Created order also allows variety. Dogs, cattle, and plants can differ considerably without those differences requiring us to deny the order Genesis describes. Human beings differ physically while belonging to one human race descended from Adam and Eve. The text does not require every creature within a kind to be identical, and it does not present life as originating independently of God.
Adam, Eve, and Marriage
Beginning at Genesis 2:4, Moses focuses on the garden and the first man and woman. Genesis 1 has already placed their creation on the sixth day. The second chapter concentrates on the man, his responsibilities, and the woman God made for him. I read it as a fuller account of their creation within that week, rather than a competing account with a different beginning.
And the LORD God formed man of the dust of the ground, and breathed into his nostrils the breath of life; and man became a living being.
Genesis 2:7
God formed Adam from dust and gave him the breath of life. I understand that as direct creation, rather than an animal ancestor receiving an added spiritual identity. The chapter describes God placing him in the garden, bringing animals for him to name, and forming the woman from his side.
God made Adam first, then formed Eve from his side. That order does not give Adam greater human worth. When he calls her “bone of my bones and flesh of my flesh,” he recognizes the humanity they share. Genesis then explains the marriage covenant in which a man and a woman are joined as one flesh. Their unity and the distinction between man and woman belong together in God’s design.
Jesus returned to that beginning when the Pharisees questioned Him about marriage and divorce:
But from the beginning of the creation, God “made them male and female.”
Mark 10:6
Jesus based His answer on God’s creation of the first man and woman and on their becoming one flesh. He placed them at creation’s beginning, which I understand to fit the week described in Genesis. I do not read Adam and Eve as symbols added to an account of humanity emerging through a long evolutionary process. Jesus grounded His teaching about marriage in what the Creator actually did.
Death, Adam, and Christ
Paul also treats Adam as a real man whose rebellion had real consequences:
Therefore, just as through one man sin entered the world, and death through sin…
Romans 5:12
Adam’s sin brought death into human history. Paul’s immediate argument concerns human sin, condemnation, and death, rather than every physical process following the fall. Adam’s rebellion brought mortality and a corrupt nature to his descendants, but our personal guilt comes from our own sins, not from inheriting his guilt. Reducing Adam to an illustration would change Paul’s explanation of how humanity came to need redemption.
Genesis 3 describes God’s curse on the ground after Adam’s rebellion, with thorns and painful toil following his sin. Romans 8 describes creation in bondage to corruption and awaiting deliverance. Reading these passages together, I understand the world God called very good to have been free from the corruption, violence, and death that followed the fall.
On that reading, long ages of animal suffering, with creatures hunting and killing one another before Adam’s sin, present a substantial difficulty. That suffering and violence would have to belong to the original world God pronounced very good. I find it hard to reconcile them with Scripture’s distinction between creation’s original goodness and the ruin that followed the fall. The disagreement involves the place of suffering and death, as well as the amount of time.
Paul’s discussion of resurrection in 1 Corinthians 15 returns to Adam:
For since by man came death, by Man also came the resurrection of the dead.
1 Corinthians 15:21
Paul does not separate resurrection from the history in Genesis. The first man’s rebellion brought death, while Jesus Christ brings resurrection to those who belong to Him. Creation, fall, redemption, and resurrection belong within the same account of God’s dealings with humanity. The gospel answers an actual catastrophe that no amount of self-improvement can undo.
Jesus is the eternal Son who became fully man without ceasing to be God. He was virgin-born and completely sinless, and His perfection qualified Him to give Himself willingly to be slain as the perfect sacrifice for our sins. Wicked men tortured and killed Him; the Father did not punish or abandon Him. Father and Son remained united in saving us. His sacrifice was complete through His shed blood and death before He was buried and rose bodily. Paul calls Him the last Adam: He gives life to those who belong to Him, answering the ruin that came through the first man.
I can explain every creation argument correctly and still need to repent and trust Christ. No one earns salvation by mastering this subject. God genuinely offers it to every person, and that offer can be resisted and rejected. Everyone who repents and believes in Jesus is forgiven and born again. The Holy Spirit gives that believer new life, dwells within him, and seals him as God’s own, eternally secure in Christ. Obedience expresses that new life; it neither earns nor keeps salvation. This security gives no permission for lawlessness, and merely professing belief is not proof that someone has been born again.
Recognizing that creation arguments cannot earn salvation should not lead us to disregard Genesis. Jesus and His apostles received these beginnings as true. The same Scripture that proclaims His bodily resurrection describes Adam formed from dust, Eve made from Adam, and judgment following rebellion. Trusting the Savior includes a willingness to hear what He and His apostles teach about the human condition He came to remedy.
Errors to Avoid
Some Christians learned old-earth interpretations without any intention of denying Scripture. Others have been told that a young-earth reading is anti-intellectual. We should examine the readings themselves instead of claiming to know everyone’s motives. I disagree with the following explanations because of what they ask us to do with the biblical language.
The day-age view understands the days as long periods, appealing in part to the range of meanings for yom. My objection is not that the word can never have a broader meaning. It is that this meaning does not fit naturally with the numbered days, evening and morning, and the later explanation of Israel’s workweek. A possible meaning elsewhere does not settle its use here.
The gap theory places a long interval between Genesis 1:1 and 1:2, often proposing an earlier ruin followed by restoration. Genesis does not clearly describe that interval or catastrophe. Exodus 20:11 also includes the heavens, earth, sea, and everything in them within the six days. I do not see an adequate basis for assigning the principal parts of that creation to an earlier age.
The framework view understands the days primarily as a literary arrangement rather than a chronological sequence. Genesis does have careful structure, but a structured account can also record events in sequence. My objection is to using that arrangement as a reason to disregard the numbered days and evening and morning. The Sabbath command further connects those days to the week Israel was to observe.
Theistic evolution affirms God as Creator while proposing that He used evolutionary processes to bring about life and humanity. I do not find human evolutionary ancestry consistent with God directly forming Adam from dust and making Eve from his side. Jesus’ placement of male and female at creation’s beginning and Paul’s teaching about sin and death reinforce that objection. Genesis does not describe an animal ancestor receiving a spiritual identity to become the first man.
These objections call for explanation, not contempt. If I use creation to belittle another believer, I have found a way to speak about my Maker while disregarding how He tells me to treat people. I want to state my conviction plainly and be willing to answer questions patiently. The Creator’s authority should lead me to repentance, worship, and compassion as well as a willingness to defend His Word.
My Final Thoughts
I believe the numbered days, evening and morning, and the Sabbath command support six ordinary creation days. The creation of the first man and woman, followed by sin and death, also prepares us to understand why Christ came. I do not want to hide that conviction or use it as an excuse for pride. The One who made me has authority over how I live, including how honestly and patiently I speak with people who disagree.
I believe the earth is thousands of years old, with roughly six thousand years as a reasonable estimate from the biblical chronology. Genesis does not give a BC date for creation, but it does describe a creation week and tell us the fathers’ ages when the next named sons were born. Those ages let us follow the years from Adam toward Abraham. The later history of Israel then carries the chronology toward Christ.
Adding ages at the births is fairly straightforward. Fitting a period of sojourning or a king’s reign into the larger record can require comparison with other passages. I want to distinguish the time Scripture expressly states from the decisions we make when arranging those periods, so that an approximate creation date is not presented as an exact one.
Reading the Beginning as History
Before Genesis tells us how long creation took, it tells us who created everything.
In the beginning God created the heavens and the earth.
Genesis 1:1
“The heavens and the earth” includes the whole created order. God did not assemble a world from materials that existed independently of Him. Everything owes its existence to Him, including time itself. His authority over us follows from that relationship: the One who made us has the right to tell us who we are and how we ought to live.
Genesis goes on to explain marriage, the entrance of sin, and God’s judgment, while beginning the promise that leads to Christ. Those events explain what went wrong with the world He came to redeem. If I rearrange the opening chapters whenever another account of origins requires it, the changes can reach into those teachings as well. I am deciding how to read the history on which they depend, rather than merely adjusting a date.
God created in six days and rested on the seventh. The Hebrew word yom can mean different things depending on its context, much like our English word “day.” Here the days are numbered, with evening and morning marking their progression.
God called the light Day, and the darkness He called Night. So the evening and the morning were the first day.
Genesis 1:5
The numbered sequence and the evening-and-morning pattern lead me to understand these as ordinary days. Knowing that yom can describe a longer period elsewhere does not establish that it means a long era in this passage. Moses gives us another reason to read it this way when he connects the creation week with Israel’s weekly work and rest.
For in six days the LORD made the heavens and the earth, the sea, and all that is in them, and rested the seventh day. Therefore the LORD blessed the Sabbath day and hallowed it.
Exodus 20:11
God gave Israel His six days of work and seventh day of rest as the pattern for their own week. I find that connection a compelling reason to read the creation days as ordinary days. If they represented immense ages, the relationship to Israel’s working week would need an explanation Moses does not give. The study on the literal six days of creation examines that wording more closely.
Jesus also appealed to the creation of Adam and Eve when He taught about marriage.
But from the beginning of the creation, God “made them male and female.”
Mark 10:6
Genesis describes Adam being formed from dust and Eve being made from him. Jesus treated them as real people whose union established God’s pattern for marriage. I understand His reference to the beginning as fitting Genesis placing humanity near the start of creation history. Some Christians who accept an older earth also affirm a historical Adam and Eve, so disagreement about the earth’s age gives me no grounds to accuse them of denying those people.
Paul’s explanation of salvation likewise depends on Adam being a real man whose sin had real consequences.
Therefore, just as through one man sin entered the world, and death through sin, and thus death spread to all men, because all sinned.
Romans 5:12
Human death entered through Adam’s sin, while righteousness and life come through Jesus Christ. Paul gives the corresponding contrast in 1 Corinthians 15:22: “For as in Adam all die, even so in Christ all shall be made alive.” If Adam were merely symbolic, we would be changing the explanation of what Christ came to overcome. Accepting a particular creation date cannot save anyone, but the people and events in Genesis belong to the same history that brings us to our Savior.
Animal death before Adam raises a related question. God called His completed creation very good, and Genesis then describes sin and the curse. Romans 8 speaks of creation groaning under corruption, while 1 Corinthians 15 calls death an enemy. I find that sequence difficult to reconcile with ages of animal disease, predation, and extinction before Adam sinned.
Old-earth Christians often respond that Romans 5 specifically connects human death with Adam’s sin. They are right that the passage does not directly tell us when animal death began. I still believe the wider sequence of original goodness, sin, and creation’s corruption supports a young earth. That is an argument from the passages together, and I should not quote Romans 5 as though it explicitly names animal death.
From Adam to Noah and the Flood
Genesis 5 lets us begin tracing the elapsed years through the family line. Adam’s entry gives three figures: his age when Seth was born, the years he lived afterward, and his total lifespan. We need to distinguish those figures before adding the years.
And Adam lived one hundred and thirty years, and begot a son in his own likeness, after his image, and named him Seth. After he begot Seth, the days of Adam were eight hundred years; and he had sons and daughters. So all the days that Adam lived were nine hundred and thirty years; and he died.
Genesis 5:3-5
Adam was 130 when Seth was born. We use that number to move forward in the chronology, not his entire lifespan of 930 years, because father and son were alive at the same time. Seth was 105 when Enosh was born, and Enosh was 90 when Cainan was born. Adding those three ages takes us 325 years from creation to Cainan’s birth.
The remaining ages follow the same pattern in the Masoretic Text, the traditional Hebrew text used for these Old Testament passages. Cainan was 70 when Mahalalel was born, Mahalalel was 65 at Jared’s birth, and Jared was 162 when Enoch was born.
Enoch was 65 at Methuselah’s birth, Methuselah was 187 at Lamech’s, and Lamech was 182 when Noah was born. Adding those ages to the earlier figures places Noah’s birth 1,056 years after creation.
Genesis also mentions other sons and daughters without naming them. Their omission does not make the time between the named births indefinite, because each father’s age is tied to the next birth in the line. We have been given a measure of elapsed time as well as a list of ancestors. The study on Cain’s wife considers those early family relationships.
The extraordinary lifespans recorded in this chapter did not remove the consequence of Adam’s sin. He lived 930 years and still died, and the repeated words “and he died” follow his descendants through the chapter. Enoch is the conspicuous exception because God took him. The ages tell us how the years passed, while the repeated deaths remind us what had happened to the human family.
After giving us the years up to Noah’s birth, Genesis tells us his age when the Flood began.
Noah was six hundred years old when the floodwaters were on the earth.
Genesis 7:6
Adding those 600 years to the 1,056 years before Noah’s birth puts the Flood 1,656 years after creation, using the ages supplied by the Masoretic Text.
Genesis continues dating events within Noah’s life. It records when the fountains of the great deep broke open and the windows of heaven opened, how long the waters prevailed, and when the ark came to rest. Later dates follow the receding waters until Noah’s family leaves at God’s command. His covenant with them and the nations descending from that family carry the account forward after the judgment.
I understand Genesis 6–9 as the history of a global Flood. God judged a world filled with violence, while Noah found grace in His sight and received instructions for the ark. By preserving Noah’s family, God also preserved the line of promise. The dated events connect the people before the Flood with their descendants afterward, which is part of my reason for receiving the account as history. Reducing it to an undefined moral illustration would leave those chronological connections unexplained. The study on Noah and the ark follows the judgment and rescue more fully.
From the Flood to Abraham
Genesis 11 continues the family line through Noah’s son Shem toward Abram. The first birth in the passage is dated in relation to the Flood, connecting this part of the chronology to what came before it.
This is the genealogy of Shem: Shem was one hundred years old, and begot Arphaxad two years after the flood. After he begot Arphaxad, Shem lived five hundred years, and begot sons and daughters. Arphaxad lived thirty-five years, and begot Salah.
Genesis 11:10-12
Arphaxad was born two years after the Flood. He was 35 when Salah was born, Salah was 30 at Eber’s birth, and Eber was 34 when Peleg was born.
Peleg was 30 at Reu’s birth, Reu was 32 when Serug was born, Serug was 30 at Nahor’s birth, and Nahor was 29 when Terah was born. Adding those ages and the two years after the Flood places Terah’s birth 1,878 years after creation.
Terah’s entry requires closer comparison with other passages. Genesis 11:26 says he lived seventy years and then names Abram, Nahor, and Haran. Since Abram comes first in the list, we might assume he was born when Terah was seventy. The order of the names, however, does not necessarily give us the order of the births.
Genesis says Terah died at 205 and Abram was seventy-five when he left Haran. Stephen adds that Abram moved on after his father’s death (Acts 7:4). Subtracting Abram’s seventy-five years from Terah’s 205 points to Terah being about 130 at Abram’s birth. I find that a better fit with the passages than assuming the first-named son must have been the oldest.
If Abram was born when Terah was seventy, the total from creation is about 1,948 years. Using 130 for Terah’s age gives roughly 2,008 years. I favor the second calculation, but both place Abraham about two thousand years after creation. The sixty years between those totals deserve attention; they do not create an undefined interval into which we can insert millions of years.
These totals follow the Masoretic Text. The Greek Septuagint and Samaritan Pentateuch do not always give the same patriarchal ages, so the textual basis affects a proposed creation date. I use the Masoretic Text as the Old Testament base and retain its figures. Some longer ancient readings add centuries or more than a thousand years. That can change a proposed date substantially, but the chronology still falls within thousands of years. The study on the patriarchal lifespans in the Masoretic Text and Septuagint compares those readings in more detail.
From Abraham to Christ
The ages after Abraham carry us toward Israel’s life in Egypt. Abraham was one hundred when Isaac was born, Isaac was sixty at the birth of Jacob and Esau, and Jacob was 130 when he stood before Pharaoh. From there, the history includes longer periods whose starting points need closer examination.
Exodus 12:40–41 gives 430 years in connection with Israel’s sojourning and deliverance, while Galatians 3:17 gives 430 years from the confirmed promise to the Law. Does Exodus count residence in Egypt alone, or a wider patriarchal sojourn beginning with Abraham? Interpreters differ over that question, and their answers can shift the chronology by centuries. We need to establish where the period begins before using it to calculate a creation date.
In 1 Kings, the Exodus is connected to another dated event, Solomon’s construction of the temple.
And it came to pass in the four hundred and eightieth year after the children of Israel had come out of the land of Egypt, in the fourth year of Solomon’s reign over Israel, in the month of Ziv, which is the second month, that he began to build the house of the LORD.
1 Kings 6:1
Solomon began building in his fourth year, identified here as the 480th year after the Exodus. That stated interval needs to be accounted for when we read the periods of oppression and deliverance in Judges. Some of those periods may have overlapped in different regions, so adding every period as though each began only after the previous one ended can misrepresent the total.
The records of Israel’s and Judah’s kings also date events by rulers in the neighboring kingdom. Some reigns involve a co-regency, a period of shared rule. One passage may count from the beginning of shared rule while another counts from the start of sole rule, so those dates have to be reconciled. The exile and return supply further dates to fit into the record. This requires more comparison than adding the ages at the births in Genesis.
The estimate of roughly four thousand years from creation to Christ comes from fitting that broader history together. Adding approximately two thousand years since Christ points to an earth around six thousand years old. I accept that general estimate without claiming that every disputed date has been settled. Naming a precise BC year for creation would depend on how we resolve the questions just considered.
Luke traces Jesus’ ancestry through David and Abraham, then through Noah back to Adam. Galatians says He came in the fullness of time. His life in Judea and death under Roman authority belong to the history Genesis began. The Son took real human nature to redeem the descendants of Adam whose sin and death we have been following through that record.
Scientific Models, Objections, and Biblical Authority
This chronology differs sharply from the scientific consensus. The U.S. Geological Survey gives Earth’s age as about 4.54 billion years, using radiometric dating of materials from Earth and the wider solar system. That method uses the decay of radioactive isotopes to estimate ages. Modern cosmology places the universe at about 13.8 billion years; NASA’s overview describes that chronology and the ancient light called the cosmic microwave background. These conclusions reflect extensive scientific work. Adding the ages in Genesis explains my biblical calculation, but it does not by itself answer the evidence used to reach those much older dates.
I receive Scripture as God’s inerrant Word, but my interpretation of it can be mistaken. If I misunderstand a passage, appealing to its authority will not correct the mistake. I need to examine its wording and context, just as I need to understand a scientific claim before criticizing it. I can listen to a geologist explain rock layers or an astronomer discuss distant light without pretending to know more than I do. When a technical question exceeds my training, I should acknowledge that limit.
The question for this study remains whether Genesis allows the immense ages being proposed. The gap interpretation places them between Genesis 1:1 and 1:2, before the six days begin. Genesis does not state that such an interval exists. I also find that reading difficult to reconcile with Exodus 20:11, which includes the heavens, earth, sea, and everything in them within God’s six days of creation.
The day-age interpretation makes the days themselves long eras. Yet Genesis numbers them, marks them by evening and morning, and gives that week as the pattern for Israel’s ordinary work and rest. The sequence presents a further difficulty: vegetation appears before the sun is appointed to govern the day. If each day represents an immense age, vegetation would exist for an immense period before that appointment. That reading needs an explanation the passage does not supply.
Omitted generations are another proposed way to accommodate longer ages. Matthew’s genealogy can move from an ancestor to a later descendant without stating how many years separate them. Genesis supplies a different kind of information when it tells us Arphaxad was thirty-five at Salah’s birth. I understand the figures in Genesis 5 and 11 as marking the actual time between the named births. Matthew’s omitted names do not give me a reason to set aside those stated intervals.
A young-earth position can cost a Christian intellectual respectability. I should be willing to face ridicule for what Scripture teaches without using it to excuse shoddy reasoning. Nor does disagreement give me reason to treat another person as an enemy. Paul warned that the cross itself is foolishness to those who are perishing, so approval cannot decide what I believe. I want to hold to Scripture while remaining willing to have my own reasoning corrected.
The Christ Paul preached is the eternal Son who made all things. He entered the human family whose generations we have followed, becoming fully man without ceasing to be God. Born of a virgin, He lived without sin and willingly gave Himself to be slain as the perfect sacrifice for our sins. Wicked men tortured His innocent body and killed Him. His shed blood and death completed His saving sacrifice before He was buried and rose bodily from the dead. The Father did not punish, curse, abandon, strike, bruise, or pour wrath on Jesus. Father, Son, and Holy Spirit remained united in our redemption.
Christ died for the whole world and genuinely offers salvation, although people can resist Him. Everyone who repents and believes is forgiven and justified, meaning declared righteous before God. God gives that person new birth, which is what I mean by regeneration. The Holy Spirit lives within the believer and seals him, and his eternal life is secure because Christ saves him. This assurance gives no permission to carry on in lawlessness. Calling myself a Christian does not establish that I have been born again; the new life He gives should become evident in how I live.
My Final Thoughts
The creation week and the linked generations lead me to understand the earth’s age in thousands of years, with roughly six thousand years as a reasonable estimate from the wider chronology. The questions about later dates do not erase the ages Genesis supplies. Neither do those ages settle every decision needed to name an exact BC year for creation.
If another believer reaches a different calculation, I want to compare the passages with him rather than assume he is less devoted to Christ. I can hold a firm conviction and acknowledge what I have not worked out. My confidence rests in the Creator who gave us this account and entered our history to save us. Trusting Him should make me willing to examine a difficult question carefully, without mishandling Scripture or becoming hostile toward the person asking it.
