Exodus 6:12

But Moses said to the Lord , Behold, the people of Israel have not listened to me. How then shall Pharaoh listen to me , for I am of uncircumcised lips ?

But Moses said to the Lord, “If the Israelites will not listen to me, why would Pharaoh listen to me, since I speak with faltering lips?”

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?