A Bible Study on why Moses Said He is of “Uncircumcised Lips”

Moses calls himself a man of “uncircumcised lips” in Exodus 6:12 and repeats the description in verse 30. Both statements come after Pharaoh has increased Israel’s workload and Israel has refused to listen to renewed promises of rescue. Moses reasons from that painful reception to the greater challenge before Pharaoh.

The phrase does not stand alone as a general confession about Moses’ entire spiritual life. It belongs to his recurring concern about speaking. Earlier he described himself as slow of speech and tongue. Here he uses a covenant-shaped metaphor to say that his lips are not ready to serve the task God has given him.

The narrative will not let Moses’ self-assessment decide the mission. God has already promised to be present with him and has supplied Aaron to help him speak. He has also given Moses signs and identified Himself as the LORD who will redeem Israel. When Moses repeats the objection, God answers with another command.

At the burning bush, Moses first questions who he is to approach Pharaoh. He then worries about what Israel will ask and whether the people will believe him. Even after God gives him signs, Moses objects to the speaking itself. At last he asks God to send someone else. The movement shows that the issue is larger than humble self-knowledge. By the final request, the LORD’s anger is kindled because Moses is resisting a clear commission.

“Slow” reflects the Hebrew image of heaviness of mouth and tongue. Moses may be saying that he lacks eloquence or has difficulty producing speech. The expression could also describe hesitation or simply his own sense that he is incapable. Scripture never gives a medical diagnosis, so calling it a stutter goes beyond the evidence.

Acts 7:22 says Moses was learned in Egyptian wisdom and mighty in words and deeds. The statement certainly speaks to his education and public capability. It may also describe his reputation or an earlier stage of his life without disproving his later reluctance. The two passages do not require us to call Moses dishonest, and they give us no reason to invent a disease.

God’s answer is not self-esteem. The Maker of the mouth promises to be with Moses’ mouth and teach him. Moses still asks God to send another messenger, so Aaron is appointed to speak alongside him. Even then, Moses remains responsible for the calling God has given him.

The Hebrew phrase may be represented as aral sefatayim, “uncircumcised of lips.” Lips regularly stand for speech. The adjective names the physical uncircumcised condition elsewhere and can be extended metaphorically to something closed, resistant, obstructed, or not fit for its proper use.

The wording may carry shame or inadequacy, but it does not automatically confess hidden moral impurity. Its meaning must come from the speech problem and listening problem in Exodus 4-7, not from every later metaphor involving circumcision.

Exodus 6 renews God’s covenant identity through a series of promises. The LORD will bring Israel out of bondage and rescue them from Egypt. He will redeem them and take them as His own people so that they know Him as their God. Then He will bring them into the promised land and give it to them as a heritage. Moses delivers those words, but the people cannot receive them under the crushing weight of bondage.

The narrator explicitly says that Israel did not heed because of anguish of spirit and cruel bondage. He does not blame the rejection on the way Moses pronounced the message. Nor does he point to spiritual uncleanness or an earlier problem in Moses’ household. Moses interprets the rejection through his old fear about speech, but God’s explanation protects burdened people from being treated as a test audience for a leader’s ability.

Moses repeats the objection when the narrative resumes after the genealogy. The LORD does not perform a separate ritual to cleanse his lips. He does not reopen the household circumcision case, and He never agrees that Pharaoh cannot hear Moses. Instead, God defines how the speaking will be shared and sends both brothers.

Moses being “as God to Pharaoh” is an analogy of authorized representation, not deity. Aaron functions as a prophet because he receives Moses’ words and speaks them. This arrangement answers the objection about Moses’ lips. The message originates with the LORD, who entrusts it to Moses. Aaron then voices it wherever God has assigned him to speak.

Pharaoh will resist because his heart is hard, not because Aaron or Moses fails to find persuasive phrasing. God will multiply signs and judgments so that Egypt knows He is the LORD. The success of the mission rests on divine authority rather than rhetorical polish.

Aaron’s role does not make Moses passive. Moses must continue listening to the LORD and must carry the rod God gave him. He will confront Pharaoh and announce the signs that God is about to perform. He will also intercede and lead Israel out of Egypt. Aaron’s voice supplements Moses’ obedience rather than replacing it. Help can distribute a task without dissolving the responsibility of the person called to it.

The arrangement also puts a boundary around Aaron. A prophet is not a public-relations specialist free to soften an unpopular command. Aaron must say what Moses receives from God. Pharaoh is told to release Israel, and the demand remains unchanged when it is rejected. Faithful communication is measured by agreement with God’s word, not by the ruler’s approval.

As the plagues unfold, Moses speaks more often in the narrative. Exodus never pauses to announce that he received a medical cure or acquired a new personality. Acting repeatedly under God’s command may have strengthened him, while Aaron could still have served in the moments assigned to him. Through it all, the LORD remained the true source of every word and sign. The text is interested in God’s sufficiency, not in constructing a transformation story about public speaking.

Genesis 17 establishes circumcision for Abraham and the males of his household as a sign in the flesh of God’s covenant. The sign did not create God’s promise or make sinful people righteous by surgery. Abraham had already believed the LORD in Genesis 15. It marked covenant belonging and carried a real command that Abraham’s household must obey.

Genesis also warns that an uncircumcised male has broken the covenant and is to be cut off from his people. Exodus 4 must be read with that command in view. Moses is going to announce the LORD’s covenant faithfulness while a required sign has been neglected in his household.

On the journey back to Egypt, the narrative suddenly reports a life-threatening encounter. Its brevity leaves questions that careful readers should admit. The Hebrew pronoun translated “him” does not name whether Moses or the son is threatened. The traditional reading takes the person as Moses, but the grammar has produced debate.

The son is not named. Scripture does not tell us why his circumcision was delayed. It also leaves unstated who had made the earlier decision or what emotion lay behind Zipporah’s words. “Feet” may be literal, though it could also be a modest bodily euphemism. The expression “husband of blood” remains difficult as well. Any certainty about those details would be invented.

One conclusion is secure: circumcision resolves the danger. Zipporah acts, and the LORD lets the threatened person go. The text does not say divine wrath was appeased; it reports covenant obedience answering a covenant crisis.

The events belong to the same larger story, so readers may remember the household crisis when Moses later uses circumcision language. Both concern a servant called to represent the covenant God. That thematic association is fair to notice.

The stronger claim in the old article goes beyond the text. Exodus never says Moses calls his lips uncircumcised because he once failed to circumcise his son. The encounter in chapter 4 has already been resolved before the mission continues, while the phrase in chapter 6 repeats an objection about speaking after Israel does not listen.

If Moses were confessing covenant disobedience, we would expect the narrative to mention guilt or repentance. It might also refer directly to the earlier household incident. Instead, God responds by assigning the speaking roles and renewing His commands. The direct evidence therefore favors a perceived obstruction in Moses’ speaking rather than a coded confession of the household failure.

The chronology strengthens this distinction. Zipporah acts before Moses meets Aaron at the mountain of God. The household crisis has therefore passed before the elders believe the initial signs and before Pharaoh increases Israel’s labor. By the time Israel speaks from anguish in chapter 6, the circumcision has long been completed. Whatever failure produced the encampment crisis, the immediate covenant breach is no longer unresolved when Moses speaks about his lips.

Neither should the absence of an explicit link make the household episode irrelevant. It teaches that the deliverer remains under the word he announces. God does not overlook disobedience because Moses has a large assignment. That principle can be taught directly without claiming Moses encoded it in a later metaphor.

The Old Testament extends circumcision language to inner responsiveness. Leviticus 26 speaks of an uncircumcised heart being humbled in exile. Deuteronomy commands Israel to circumcise the foreskin of the heart and stop being stiff-necked. Later it promises that the LORD Himself will circumcise the heart so His people love Him.

Jeremiah applies the image to hearing. The ear is “uncircumcised” because the people cannot give heed and take no delight in the word. The image is resistance or obstruction in the faculty being named.

Those parallels clarify the force of the metaphor, but they do not make every use identical. Jeremiah’s hearers resist God’s word, whereas Moses fears that his own lips are unfit to deliver it. The context must tell us what kind of obstruction is in view. It may be rebellion in one passage and a perceived physical or rhetorical limitation in another.

Isaiah’s confession offers a meaningful comparison because another commissioned speaker focuses on his lips. In the throne vision, however, Isaiah says “unclean” rather than “uncircumcised.” After seeing the Holy King, he confesses that he is unclean and lives among an unclean people. A sign from the altar declares that his sin has been purged. Only then does Isaiah volunteer to go.

Moses receives a different answer. God does not send a coal or announce purging in Exodus 6. He restates authority and speaking roles. The comparison shows that holy ministry exposes human insufficiency, but it cannot prove Moses was confessing Isaiah’s exact kind of uncleanness.

Both passages place God’s grace before human service. God provides Isaiah’s cleansing, and He sends Moses with His word and presence. Neither man manufactures qualification through confidence. Neither is permitted to make inadequacy the final authority over a divine command.

Physical circumcision remained the Abrahamic covenant sign given in Genesis. The prophets also demanded an inward response that fleshly marking alone could not create. The New Testament warns against boasting in outward identity while the heart resists God.

Colossians brings the inward reality to union with Christ. Believers receive a circumcision made without hands. Though once dead in trespasses, they are made alive with Christ and receive forgiveness. The passage centers saving action in Christ rather than in human surgery or rhetorical ability.

This does not teach that water baptism causes regeneration. Baptism follows faith and symbolizes the believer’s identification with Christ. It portrays sharing in His death and burial before being raised with Him. The saving reality is received through faith in God’s working. Nor does the passage erase Israel or rewrite Genesis as though physical circumcision never mattered in its covenant setting.

The movement from death to life answers the deepest human unfitness. Sinners do not need improved presentation before approaching God. They need forgiveness and new life through the Son.

Romans 2 makes a related distinction between outward Jewish identity and an inward work of the Spirit. Paul does not say that God’s promises to Israel have become meaningless. He exposes the folly of possessing a covenant mark while breaking the law and seeking human praise. Outward privilege cannot replace a heart turned toward God.