3 And I myself will harden the heart of Pharaoh, and I will make my signs and my wonders numerous in the land of Egypt.
4 And Pharaoh will not listen to you, and I will put my hand into Egypt and bring out my divisions, my people, the Israelites, from the land of Egypt with great punishments.
5 And the Egyptians will know that I am Yahweh when I stretch out my hand over Egypt and bring the Israelites out from their midst.”
6 And Moses and Aaron did it; as Yahweh commanded them, so they did.
7 (And Moses was eighty years old, and Aaron was eighty-three years old when they spoke to Pharaoh.)
8 And Yahweh said to Moses and to Aaron, saying,
9 “When Pharaoh speaks to you, saying, ‘Do a wonder for yourselves,’ you will say to Aaron, ‘Take your staff and throw it before Pharaoh, and it will become a snake.’ ”