Exodus 4:25 in the King James Version
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.
Context
24 On the way at a lodging place, the LORD met Moses and wanted to kill him.
25 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.”
26 So he let him alone. Then she said, “You are a bridegroom of blood,” because of the circumcision.