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8 And all these your servants will come to me, going down on their faces before me and saying, Go out, and all your people with you: and after that I will Go out. And he went away from Pharaoh burning with wrath.
21 And the Lord said to Moses, When you go back to Egypt, see that you do before Pharaoh all the wonders which I have given you power to do: but I will make his heart hard and he will not let the people go.