Exodus 6:12
And Moses spake before the Lord, saying, Behold, the children of Israel have not hearkened unto me; how then shall Pharaoh hear me, who am of uncircumcised lips?
Cross-reference
In Exodus 6:9, the Israelites' refusal to listen sets up Moses' argument in 6:12.
Exodus 6:30 repeats this same complaint, showing Moses' persistent self-doubt after God's command.
In Exodus 3:13, Moses earlier worried about Israel's response; here he worries about Israel and Pharaoh.
Exodus 4:10 records Moses' earlier excuse of being slow of speech, establishing his repeated reluctance.
In Exodus 4:29-31, the Israelites initially believed Moses; contrast with his claim they won't listen.
Exodus 5:19-21 shows the Israelite foremen blaming Moses, explaining why he now claims Israel won't listen to him.
In Exodus 3:11, Moses previously objected to his calling, questioning his worth — the same hesitation reappears here.
Isaiah 6:5 confesses unclean lips, a parallel confession of personal unworthiness before God's call.
Jeremiah 1:6 objects 'I do not know how to speak,' mirroring Moses' excuse of uncircumcised lips.
Jeremiah 6:10 describes uncircumcised ears that cannot hear, directly paralleling Moses' complaint that Israel won't listen.
Acts 7:51 accuses 'uncircumcised in heart and ears' of resisting the Holy Spirit, echoing Israel's resistance to Moses.