21. The Lord said to Moses, “When you go back into Egypt, see that you do before Pharaoh all the wonders which I have put in your hand, but I will harden his heart and he will not let the people go.
22. You shall tell Pharaoh, ‘the Lord says, Israel is my son, my firstborn,
23. and I have said to you, “Let my son go, that he may serve me;” and you have refused to let him go. Behold, I will kill your firstborn son.’”
24. On the way at a lodging place, the Lord met Moses and wanted to kill him.
25. Then Zipporah took a flint, and cut off the foreskin of her son, and cast it at his feet; and she said, “Surely you are a bridegroom of blood to me.”