3 But I will harden Pharaoh’s heart and multiply My signs and wonders in the land of Egypt.
4 Pharaoh will not listen to you, but I will put My hand on Egypt and bring the divisions of My people the Israelites out of the land of Egypt by great acts of judgment.
5 The Egyptians will know that I am Yahweh when I stretch out My hand against Egypt, and bring out the Israelites from among them.”
6 So Moses and Aaron did this; they did just as the Lord commanded them.
7 Moses was 80 years old and Aaron 83 when they spoke to Pharaoh.
8 The Lord said to Moses and Aaron,
9 “When Pharaoh tells you, ‘Perform a miracle,’ tell Aaron, ‘Take your staff and throw it down before Pharaoh. It will become a serpent.’ ”