Exodus 6:28-30

28On the day when the  Lord spoke to Moses in the land of Egypt, 29the  Lord said to Moses, a  “I am the  Lord; b  tell Pharaoh king of Egypt all that I say to you.” 30But Moses said to the  Lord, “Behold, c  I am of uncircumcised lips. How will Pharaoh listen to me?”

Exodus 7:1-3

Moses and Aaron Before Pharaoh

1And the  Lord said to Moses, “See, I have made you like d  God to Pharaoh, and your brother Aaron shall be your e  prophet. 2 f  You shall speak all that I command you, and your brother Aaron shall tell Pharaoh to let the people of Israel go out of his land. 3But g  I will harden Pharaoh’s heart, and though I h  multiply my signs and wonders in the land of Egypt,
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