21. The Lord said to Moses, “When you go back to Egypt, see that you do before Pharaoh all the wonders I have put under your control. But I will harden his heart and he will not let the people go.
22. You must say to Pharaoh, ‘Thus says the Lord, “Israel is my son, my firstborn,
23. and I said to you, ‘Let my son go that he may serve me,’ but since you have refused to let him go, I will surely kill your son, your firstborn!”’”
24. Now on the way, at a place where they stopped for the night, the Lord met Moses and sought to kill him.
25. But Zipporah took a flint knife, cut off the foreskin of her son and touched it to Moses’ feet, and said, “Surely you are a bridegroom of blood to me.”
26. So the Lord let him alone. (At that time she said, “A bridegroom of blood,” referring to the circumcision.)
27. The Lord said to Aaron, “Go to the wilderness to meet Moses. So he went and met him at the mountain of God and greeted him with a kiss.