The word actually states that one's disobedience to the command in the OT to be circumcised caused one to be out of covenant with God. And, in the case of Moses, the Lord sought him to kill him for neglecting to obey God's command and circumcise his son.
"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." Gen 17:14
Concerning Moses:
"And it came to pass by the way in the inn, that the Lord met him, and sought to kill him.
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.
So he let him go: then she said, A bloody husband thou art, because of the circumcision." Ex 4:24-26
According to Paul the person we were is crucified and buried with Jesus by baptism. (Rom. 6:3-4) And having been planted together in the likeness of Jesus’ death, we shall be also in the likeness of Jesus resurrection. (Rom. 6:5) These truths can be seen in one’s obedience to God’s command that everyone repent, and be water baptized in the name of the Lord Jesus. (death and burial) And, receive the gift of the Holy Ghost. (resurrection power) Having been reborn of water and Spirit provides for entrance into heaven where we will live with Jesus. (Rom. 6:8)
“ Know ye not, that so many of us as were baptized into Jesus Christ were baptized into his death?
4 Therefore we are buried with him by baptism into death: that like as Christ was raised up from the dead by the glory of the Father, even so we also should walk in newness of life.
5 For if we have been planted together in the likeness of his death, we shall be also in the likeness of his resurrection:
6 Knowing this, that our old man is crucified with him, that the body of sin might be destroyed, that henceforth we should not serve sin.
7 For he that is dead is freed from sin.
8 Now if we be dead with Christ, we believe that we shall also live with him: Rom 6:3-8