Exodus 4:26

So the LORD let him alone. (At that time she said 'bridegroom of blood,' referring to circumcision.)

(New International Version)

So He let him alone. At that time she said, 'You are a bridegroom of blood'--because of the circumcision.

(New American Standard Bible)

So he let him go: then she said, A bloody husband thou art, because of the circumcision.

(King James Version)