'Uncircumcised' in the Bible

Moses spoke before Yahweh, saying, "Behold, the children of Israel haven't listened to me. How then shall Pharaoh listen to me, who am of uncircumcised lips?"

Moses said before Yahweh, "Behold, I am of uncircumcised lips, and how shall Pharaoh listen to me?"

When a stranger shall live as a foreigner with you, and will keep the Passover to Yahweh, let all his males be circumcised, and then let him come near and keep it; and he shall be as one who is born in the land: but no uncircumcised person shall eat of it.