Exodus 10:25-29

But Moses said, “You must also let us have sacrifices and burnt offerings, that we may sacrifice to the LORD our God. Our livestock also must go with us; not a hoof shall be left behind, for we must take of them to serve the LORD our God, and we do not know with what we must serve the LORD until we arrive there.” But the LORD hardened Pharaoh’s heart, and he would not let them go. Then Pharaoh said to him, “Get away from me; take care never to see my face again, for on the day you see my face you shall die.” Moses said, “As you say! I will not see your face again.”