Contradiction with Genesis 17:14
This verse states that the uncircumcised male should be cut off from his people, which contradicts Joshua 5:7 where the children of Israel were not circumcised during their time in the wilderness.
Genesis 17:14: And the uncircumcised man child whose flesh of his foreskin is not circumcised, that soul shall be cut off from his people; he hath broken my covenant.