But Zipporah took a flint knife, cut off her son’s foreskin, and touched it to Moses’ feet. “Surely you are a bridegroom of blood to me,” she said.
Jewish Publication Society of America Version (JPS1917) - Exodus 4:25 >Then Zipporah took a flint, and cut off the foreskin of her son, and cast it at his feet; and she said: 'Surely a bridegroom of blood art thou to me.'