Exodus:6:28-12
acv@Exodus:6:28 @ And it came to pass on the day when LORD spoke to Moses in the land of Egypt,
acv@Exodus:6:29 @ that LORD spoke to Moses, saying, I am LORD. Speak thou to Pharaoh king of Egypt all that I speak to thee.
acv@Exodus:6:30 @ And Moses said before LORD, Behold, I am of uncircumcised lips, and how shall Pharaoh hearken to me?