So he let him go. i.e. "God let Moses go"—allowed him to escape death, accepted Zipporah's tardy act as a removal of the cause of offence, and gave her husband back to her. Then she said, etc. This is not a second address of Zipporah to Moses, conceived in the same terms, but an explanation of her previous address. She called him "a bloody husband because of the circumcision." Literally, "of the circumcisions." The two circumcisions, of Gershom in Midian, and of Eliezer on the way to Egypt, are especially in the writer's mind.
HOMILETICS