Exodus 6:29 WBT

²⁷  These [are] they who spoke to Pharaoh, king of Egypt, to bring out the children of Israel from Egypt: these [are] that Moses and Aaron.

²⁸  And it came to pass, on the day [when] the LORD spoke to Moses in the land of Egypt,

²⁹  That the LORD spoke to Moses, saying, I [am] the LORD: speak thou to Pharaoh, king of Egypt, all that I say to thee.

³⁰  And Moses said before the LORD, Behold, I [am] of uncircumcised lips, and how shall Pharaoh hearken to me?