Exodus 7:1-7 - Yahweh's Plans For Bringing Israel Out Of Egypt
1 And the LORD said unto Moses, "Behold, I have made thee Pharaoh's God, and Aaron thy brother shall be thy prophet. 2 Thou shalt speak all that I command thee; and Aaron thy brother shall speak unto Pharaoh, that he send the children of Israel out of his land. 3 But I will harden Pharaoh's heart, that I may multiply my miracles and my wonders in the land of Egypt. 4 And yet Pharaoh shall not hearken unto you, that I may set mine hand upon Egypt and bring out mine armies, even my people the children of Israel out of the land of Egypt, with great judgments. 5 And the Egyptians shall know that I am the LORD when I have stretched forth my hand upon Egypt, and have brought out the children of Israel from among them."
6 Moses and Aaron did as the LORD commanded them. 7 And Moses was eighty years old and Aaron eighty three when they spake unto Pharaoh.