21And Jehovah said unto Moses, When thou goest back into Egypt, see that thou do before Pharaoh all the wonders which I have put in thy hand: but I will harden his heart and he will not let the people go.
22And thou shalt say unto Pharaoh, Thus saith Jehovah, Israel is my son, my first-born:
23and I have said unto thee, Let my son go, that he may serve me; and thou hast refused to let him go: behold, I will slay thy son, thy first-born.
24And it came to pass on the way at the lodging-place, that Jehovah met him, and sought to kill him.
25Then Zipporah took a flint, and cut off the foreskin of her son, and cast it at his feet; and she said, Surely a bridegroom of blood art thou to me.
26So he let him alone. Then she said, A bridegroom of blood [art thou], because of the circumcision.
27And Jehovah said to Aaron, Go into the wilderness to meet Moses. And he went, and met him in the mountain of God, and kissed him.