Exodus 4:25 in the World English Bible
Then Zipporah took a flint, and cut off the foreskin of her son, and cast it at his feet; and she said, “Surely you are a bridegroom of blood to me.”
Context
24 And it came to pass by the way in the inn, that the LORD met him, and sought to kill him.
25 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.
26 So he let him go: then she said, A bloody husband thou art, because of the circumcision.