Exodus 6:30 DBY

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

²⁹  that Jehovah spoke to Moses, saying, I am Jehovah: speak thou unto Pharaoh king of Egypt all that I say unto thee.

³⁰  And Moses said before Jehovah, Behold, I am of uncircumcised lips, and how will Pharaoh hearken unto me?