JST, Exodus 4:24–27.
24 And it came to pass, that the Lord appeared unto him as he was in the way, by the inn. The Lord was angry with Moses, and his hand was about to fall upon him, to kill him; for he had not circumcised his son.
26 And the Lord spared Moses and let him go, because Zipporah, his wife, circumcised the child. And she said, Thou art a bloody husband. And Moses was ashamed, and hid his face from the Lord, and said, I have sinned before the Lord.