20 So Moses took his wife and his sons, put them on a donkey, and started back to Egypt. He took with him the walking stick of God.
21 The Lord said to Moses, “When you get back to Egypt, do all the miracles I have given you the power to do. Show them to the king of Egypt. But I will make the king very stubborn, and he will not let the people go.
22 Then say to the king, ‘This is what the Lord says: Israel is my firstborn son.
23 I told you to let my son go so he may worship me. But you refused to let Israel go, so I will kill your firstborn son.’ ”
24 As Moses was on his way to Egypt, he stopped at a resting place for the night. The Lord met him there and tried to kill him.
25 But Zipporah took a flint knife and circumcised her son. Taking the skin, she touched Moses’ feet with it and said to him, “You are a bridegroom of blood to me.”
26 She said, “You are a bridegroom of blood,” because she had to circumcise her son. So the Lord let Moses alone.