And the Lord said to Moses, “See, I have made you like God to Pharaoh, and your brother Aaron shall be your prophet. You shall speak all that I command you, and your brother Aaron shall tell Pharaoh to let the people of Israel go out of his land. But I will harden Pharaoh's heart, and though I multiply my signs and wonders in the land of Egypt, Pharaoh will not listen to you.