A Complete Bible Study on Giants in the Bible

Giants show up in the Bible at some key pressure points, when God’s people are staring at something that looks too big to face. The first and most mysterious mention is in Genesis 6:1-4, right before the Flood. Later, giants become a fear test for Israel on the edge of the promised land, and then they reappear as champions meant to intimidate and stall God’s work. If we stay close to what the Bible actually says, we can learn both how serious evil can get and how steady faith answers when the enemy looks unstoppable.

Giants before the Flood

Genesis 6 is part of the build-up to the Flood. Moses is not tossing in a strange legend for color. He is showing what the world was like as judgment drew near. Human sin is front and center in the chapter, but the way Genesis 6:1-4 is placed tells you there was also something abnormal and corrupting happening alongside that growing wickedness.

What Genesis 6 shows

Genesis 6:1-4 sets three things right next to each other: the sons of God, the daughters of men, and the Nephilim. It also connects all of it to a time when humanity was multiplying. One easy-to-miss detail is that the Nephilim are mentioned before the chapter spells out God’s assessment of widespread violence. The flow is: this strange union and its results, then God’s statement about His Spirit and man’s flesh, then the Nephilim, and only after that the broader description of wickedness and violence. That placement is not an accident. Genesis is giving you part of the setting that leads into God’s response.

Now it came to pass, when men began to multiply on the face of the earth, and daughters were born to them, that the sons of God saw the daughters of men, that they were beautiful; and they took wives for themselves of all whom they chose. And the LORD said, “My Spirit shall not strive with man forever, for he is indeed flesh; yet his days shall be one hundred and twenty years.” There were giants on the earth in those days, and also afterward, when the sons of God came in to the daughters of men and they bore children to them. Those were the mighty men who were of old, men of renown. (Genesis 6:1-4)

Right after this, the chapter moves into God seeing that man’s wickedness was great and that the earth was filled with violence. The Nephilim are not said to be the only reason for judgment. The text does not let us pin the Flood on one factor. But it does show that the days leading to the Flood were not normal. The world was collapsing morally, and something was twisting God’s design in a way that fit that collapse.

Who the sons of God are

The phrase sons of God has a consistent usage in the Old Testament. In Job, the sons of God present themselves before the LORD, and Satan comes among them. That is a scene in the heavenly court, not a meeting of human believers.

Now there was a day when the sons of God came to present themselves before the LORD, and Satan also came among them. (Job 1:6)

Because of that, many careful readers take the sons of God in Genesis 6 to be heavenly beings, and in this context, rebellious ones. Some argue for the Sethite view, meaning the godly line of Seth marrying the ungodly line of Cain. That view is trying to keep Genesis 6 purely human. The trouble is that Genesis does not say sons of Seth. It says sons of God, and then it describes the outcome in unusual terms: Nephilim, mighty men, men of renown. The Sethite view can be argued, but it is not the most natural reading of the phrase as the Old Testament uses it.

We do need to keep this straight: Genesis 6 does not explain the mechanics in detail, and we should not pretend it does. Still, later Scripture does point back to a grave angelic sin connected with judgment, and it places that reminder alongside the Flood generation.

And the angels who did not keep their proper domain, but left their own abode, He has reserved in everlasting chains under darkness for the judgment of the great day; (Jude 1:6)

For if God did not spare the angels who sinned, but cast them down to hell and delivered them into chains of darkness, to be reserved for judgment; and did not spare the ancient world, but saved Noah, one of eight people, a preacher of righteousness, bringing in the flood on the world of the ungodly; (2 Peter 2:4-5)

Those references do not answer every question, but they do confirm that the Bible wants you to take seriously that there is a spiritual realm with real rebellion, and that God judged that rebellion.

A word note that helps

The Hebrew word Nephilim is tied to the idea of falling. Some take it as fallen ones. Others connect it to those who cause others to fall. Either way, it reads like a warning label, not a casual description of tall men. Genesis is not just saying, there were big folks around. It is marking something ominous about that time.

Then Genesis 6:4 includes a small phrase that matters: and also afterward. That does not require that the Nephilim survived the Flood. Scripture does not say that, and it does not explain how a similar giant presence shows up later. It simply tells you that this kind of thing appears again after those days. Genesis plants that seed so that when later books mention giant clans, you are not supposed to treat it as a brand-new category.

The statement about 120 years also fits best as a window of patience before the Flood, not a brand-new rule that instantly shortened human lifespan. In context, God is announcing that He will not keep striving with man indefinitely. He gives time, and then judgment comes. God warned, restrained, and waited. When He acted, it was not random.

Giants in Canaan

When Israel reaches the edge of the promised land, the giant issue comes back in a different way. Genesis 6 is strange and shadowy. Numbers 13 is plain: Israel is looking at real enemies and real cities, and the question is whether they will trust God’s promise when the obstacle looks huge.

The grasshopper report

The spies were sent to observe and report what was there. Ten of them came back with a report shaped by fear. They did not deny the land was good. They denied, in practice, that God could bring them in. Their words turned the nation inward, until the people started describing themselves as small and doomed.

There we saw the giants (the descendants of Anak came from the giants); and we were like grasshoppers in our own sight, and so we were in their sight.” (Numbers 13:33)

That grasshopper line is not just colorful talk. It is how unbelief talks. It measures identity by what is seen and felt instead of by what God has said. This is what makes the scene so sobering. Israel had already been redeemed from Egypt by blood and power. They had seen the Red Sea and God’s provision in the wilderness. Fear did not erase those facts, but it made them feel distant, like they belonged to another life.

The spies also say they saw the Nephilim and connect them to the descendants of Anak. It is possible they were using the oldest frightening label they knew for unusually large men. It is also possible there was a deeper connection that Scripture does not explain. Either way, the text is clear about the effect: the enemies looked beyond normal, and that sight became the test.

Faith talks different

Caleb’s response is short and steady. He does not argue that the enemy is small. He argues that obedience is still right because God is able. Joshua joins him later and says the LORD is with them and that the enemy’s protection has departed. They interpret reality through God’s presence and promise, not through the height of the people or the strength of the walls.

Only do not rebel against the LORD, nor fear the people of the land, for they are our bread; their protection has departed from them, and the LORD is with us. Do not fear them.” (Numbers 14:9)

Fear is not just a feeling that drifts through and leaves. It is a way of thinking that starts taking authority over you. Once it does, you begin speaking like defeat is already settled, even while God is still calling you to trust Him.

The cost at Kadesh Barnea was heavy. That generation died in the wilderness. God did not fail His promise, but He did discipline unbelief. It is one of the Bible’s clearest warnings that a person can experience real deliverance and still refuse to move forward when trust is required.

The giant clans named

As Israel moves closer, the Bible uses several names for tall and formidable peoples: Anakim, Rephaim, Emim, and Zamzummim. Those names are not there as trivia. They underline that Israel’s victory would not be explained by natural strength. If Israel wins, it will be because God keeps His word.

The Anakim are tied to Anak and to places like Hebron. The Rephaim include Og king of Bashan, and Deuteronomy notes the size of his bed. The Bible is not trying to entertain you with a strange furniture detail. It is grounding the reader in a simple fact: this was not an easy opponent on human terms.

“For only Og king of Bashan remained of the remnant of the giants. Indeed his bedstead was an iron bedstead. (Is it not in Rabbah of the people of Ammon?) Nine cubits is its length and four cubits its width, according to the standard cubit. (Deuteronomy 3:11)

Deuteronomy also mentions that some of these tall peoples were displaced before Israel even arrived. That is a quiet point many people miss. God had already removed giant-like groups in other regions. Giants were never unbeatable. They were only “unbeatable” when God’s people decided in their hearts that God could not handle them.

(That was also regarded as a land of giants; giants formerly dwelt there. But the Ammonites call them Zamzummim, a people as great and numerous and tall as the Anakim. But the LORD destroyed them before them, and they dispossessed them and dwelt in their place, (Deuteronomy 2:20-21)

Giants and intimidation

Once you come out of Numbers, you want to know whether the giant fear ever gets answered. Joshua shows that it does. Then the kingdom era shows that intimidation keeps trying to come back, even after real victories. The enemy is content to reuse an old tactic if it still works.

Joshua breaks strongholds

Joshua records that the Anakim were cut off from the hill country, with survivors only in a few Philistine cities like Gaza, Gath, and Ashdod. Two things matter there. God kept His word, and the giants that froze Israel in Numbers were not permanent. Also, the text explains why giant champions can still appear later. There were remnants.

And at that time Joshua came and cut off the Anakim from the mountains: from Hebron, from Debir, from Anab, from all the mountains of Judah, and from all the mountains of Israel; Joshua utterly destroyed them with their cities. None of the Anakim were left in the land of the children of Israel; they remained only in Gaza, in Gath, and in Ashdod. (Joshua 11:21-22)

Caleb is another answer to the fear problem. He asks for the very hill country that had once frightened the nation. He is not looking for an easy retirement plot. He wants the hard place, because he is still trusting the LORD decades later. That is steady faith. It believes God for specific ground that fear once claimed.

Now therefore, give me this mountain of which the LORD spoke in that day; for you heard in that day how the Anakim were there, and that the cities were great and fortified. It may be that the LORD will be with me, and I shall be able to drive them out as the LORD said.” (Joshua 14:12)

When people struggle with the conquest, it helps to stay inside the Bible’s own boundaries. God has the right to judge the nations, and He had given the Canaanite cultures long time while their wickedness grew.

But in the fourth generation they shall return here, for the iniquity of the Amorites is not yet complete.” (Genesis 15:16)

Israel was not given a blank check for violence. They acted under direct command in a unique moment of history. And even in that setting, mercy showed up when people responded in faith, like Rahab, and when people sought terms, like the Gibeonites. Judgment is real, and mercy is real. The text does not apologize for either one.

Goliath as a tool

By the time you reach 1 Samuel 17, Israel has drifted, the Philistines are pressing, and a giant from Gath steps forward. His main strategy is not just combat. It is mockery, delay, and psychological pressure. He keeps it up long enough that fear starts feeling normal and courage starts feeling unrealistic.

When Saul and all Israel heard these words of the Philistine, they were dismayed and greatly afraid. (1 Samuel 17:11)

David walks into that scene with a different frame. He does not see it as a self-esteem moment. He sees it as a direct challenge to the name of the living God. When he calls Goliath uncircumcised, he is not tossing out a racial insult. Circumcision was the sign of being set apart to the LORD in Israel. David is saying, this man has no standing to defy God’s people as if God is nothing.

Then David spoke to the men who stood by him, saying, “What shall be done for the man who kills this Philistine and takes away the reproach from Israel? For who is this uncircumcised Philistine, that he should defy the armies of the living God?” (1 Samuel 17:26)

David also remembers God’s past help with the lion and the bear. That is not nostalgia. It is simple trust built on God’s track record. If God helped him then, God can help him now. Faith is not a confidence trick. It is taking God seriously based on who He is and what He has already shown.

Moreover David said, “The LORD, who delivered me from the paw of the lion and from the paw of the bear, He will deliver me from the hand of this Philistine.” And Saul said to David, “Go, and the LORD be with you!” (1 Samuel 17:37)

Simple means, real win

David refuses Saul’s armor because it does not fit. He fights with the means God has trained him with. The sling and stone are not magic. They are ordinary tools in the hands of a man trusting the LORD. Then David uses Goliath’s own sword to finish the victory. God often brings down proud strength with simple means so nobody can pretend the outcome was merely human skill.

The giant theme does not end with Goliath. Later passages mention more giant warriors connected with Gath who fall to David and his men. That keeps you from treating these accounts like a one-time odd event. Israel faced repeated intimidation from physically imposing champions, and God gave repeated victories over time through faithful servants.

These four were born to the giant in Gath, and fell by the hand of David and by the hand of his servants. (2 Samuel 21:22)

Pulling the whole line together, Genesis 6:1-4 shows that evil can be unusually bold and unusually corrupting. Numbers and Samuel show that intimidation becomes a spiritual test that reveals what is inside God’s people. The New Testament does not tell believers to become experts in giant lore. It does teach us that there is real spiritual conflict and that we are to stand firm with what God provides.

For we do not wrestle against flesh and blood, but against principalities, against powers, against the rulers of the darkness of this age, against spiritual hosts of wickedness in the heavenly places. (Ephesians 6:12)

There is also a boundary to keep. The Bible does not give us permission to spin a mythology of secret bloodlines and endless conspiracies. Where Scripture speaks, speak. Where Scripture is quiet, be quiet. The clearest use of these passages for a believer today is not chasing hidden facts. It is learning how faith responds when obedience feels costly and the obstacle looks huge.

Sometimes your “giant” is not a man from Gath. It is the thing that makes obedience feel impossible: a diagnosis, a temptation that has humbled you, financial pressure, a hostile workplace, a strained relationship, a calling you know is right but you feel too weak for. Underneath it is the same question Israel faced: will you measure reality by what you see, or by what God has said?

My Final Thoughts

Genesis 6:1-4 shows that rebellion can run deeper than we first assume, and God takes corruption seriously. Numbers and Samuel show that fear is not neutral. It argues with God’s promise, and it spreads fast if we let it.

If you have been stalled by a giant, do not make peace with paralysis. Bring the problem back under God’s authority. Pray honestly, take the next obedient step you already know to take, and keep your mouth from preaching grasshopper theology to yourself. God does not ask you to pretend the enemy is small. He calls you to trust that He is greater, and to move forward in the strength He supplies.