Exodus 6:30 WEB

²⁸  It happened on the day when Yahweh spoke to Moses in the land of Egypt,

²⁹  that Yahweh spoke to Moses, saying, 'I am Yahweh. Speak to Pharaoh king of Egypt all that I speak to you.'

³⁰  Moses said before Yahweh, 'Behold, I am of uncircumcised lips, and how shall Pharaoh listen to me?'