Shemot 4:23-25

Orthodox Jewish Bible

²³ And I say unto thee, Let beni (My son) go, that he may serve Me: and if thou refuse to let him go, hinei, I will slay thy ben, even thy bechor.

²⁴ And it came to pass on the derech at the malon, that Hashem met him, and sought to kill him.

²⁵ Then Tzipporah took a sharp stone, and cut off the arlat ben (foreskin of son) of her, and cast it at his feet, and said, Surely a choson damim (a bridegroom of blood) art thou to me.