Exodus 7:1-7 - Yahweh's Plans For Bringing Israel Out Of Egypt
1 Jehovah said to Moses: See, I make you as God to Pharaoh, and your brother Aaron shall be your prophet. 2 You shall speak all that I command you. Your brother Aaron shall speak to Pharaoh that he let the sons of Israel go out of his land. 3 I will harden Pharaoh's heart that I may multiply my signs and wonders in the land of Egypt. 4 Pharaoh will not listen to you. Then I will use my power to punish (lay my hand upon) Egypt severely. I will bring my people, the sons of Israel, out of Egypt in organized family groups. 5 The Egyptians will know that I am Jehovah when I use my power against Egypt and bring the sons of Israel out of there.
6 Moses and Aaron did as Jehovah commanded them. 7 Moses was eighty years old and Aaron was eighty-three when they talked to Pharaoh.