Exodus 4:25

254:25 Moses had not circumcised his son in obedience to the commandment that God had given to Abraham and his descendants (Gen 17:10 ff). It is possible that Moses refrained from doing the procedure because his wife Zipporah, a Midianite, had objected. If so, Zipporah now reluctantly performed the procedure herself as a last resort to save Moses’ life, not hiding her disgust over the situation.Then Zipporah took a flint knife and cut off the foreskin of her son and threw it at Moses’ feet, and said, “Indeed you are a husband of blood to me!”