Exodus 6:28-Exodus 7:13 - Moses And Aaron Before Pharaoh
28 And on the day when the word of the Lord came to Moses in the land of Egypt, 29 The Lord said to Moses, I am the Lord: say to Pharaoh, king of Egypt, everything I am saying to you.
30 And Moses said to the Lord, My lips are unclean; how is it possible that Pharaoh will give me a hearing?
1 And the Lord said to Moses, See I have made you a god to Pharaoh, and Aaron your brother will be your prophet. 2 Say whatever I give you orders to say: and Aaron your brother will give word to Pharaoh to let the children of Israel go out of his land. 3 And I will make Pharaoh's heart hard, and my signs and wonders will be increased in the land of Egypt. 4 But Pharaoh will not give ear to you, and I will put my hand on Egypt, and take my armies, my people, the children of Israel, out of Egypt, after great punishments. 5 And the Egyptians will see that I am the Lord, when my hand is stretched out over Egypt, and I take the children of Israel out from among them.
6 And Moses and Aaron did so: as the Lord gave them orders, so they did. 7 And Moses was eighty years old, and Aaron eighty-three years old, when they gave the Lord's word to Pharaoh.
8 And the Lord said to Moses and Aaron, 9 If Pharaoh says to you, Let me see a wonder: then say to Aaron, Take your rod and put it down on the earth before Pharaoh so that it may become a snake. 10 Then Moses and Aaron went in to Pharaoh and they did as the Lord had said: and Aaron put his rod down on the earth before Pharaoh and his servants, and it became a snake. 11 Then Pharaoh sent for the wise men and the wonder-workers, and they, the wonder-workers of Egypt, did the same with their secret arts. 12 For every one of them put down his rod on the earth, and they became snakes: but Aaron's rod made a meal of their rods. 13 But Pharaoh's heart was made hard, and he did not give ear to them, as the Lord had said.