Exodus 4:24-28

And it came to pass by the way in the inn, that the LORD met him, and sought to kill him.

Then Zipporah took a sharp stone, and cut off the foreskin of her son, and cast it at his feet, and said, Surely a bloody husband art thou to me.

So he let him go: then she said, A bloody husband thou art, because of the circumcision.

And the LORD said to Aaron, Go into the wilderness to meet Moses. And he went, and met him in the mount of God, and kissed him.

And Moses told Aaron all the words of the LORD who had sent him, and all the signs which he had commanded him.