This work overthrows through mere exegesis three millennia of Judaic orthodoxy about the circumcision. Our interpretations of the whole passages of the Bible concerning that mutilation converge to suggest that the Holy Book does not lie but that you must know how to read it. Two disclosures must be done: firstly, the explanation of the apparent contradiction between Genesis 15 and Genesis 17 shows that not God but a pharaoh (a thesis underlying in "Secrets of the Exodus") imposed on Abraham a Covenant the condition of which is the circumcision that Abram had abolished when young, secondly and above all, the Second Commandment bans circumcision, which is confirmed by the non mentioning of circumcision in the Book of Deuteronomy. Merely military, the Covenant with Abraham had nothing religious and, since Moses was opposed to circumcision, it could be implemented, through the invasion of Palestine thanks to the help of the Egyptian army, only at his death. The explanation of the scene of the circumcision of Moses' son, controversial for the exegetes, is the icing upon our cake.