'Circumcision' in the Bible

And he gave him the covenant of circumcision: and so Abraham begat Isaac, and circumcised him the eighth day; and Isaac begat Jacob; and Jacob begat the twelve patriarchs.

And they of the circumcision which believed were astonished, as many as came with Peter, because that on the Gentiles also was poured out the gift of the Holy Ghost.

And when Peter was come up to Jerusalem, they that were of the circumcision contended with him,

Saying, You went to men without circumcision, and took food with them.

Now certain men came down from Judaea, teaching the brothers and saying that without circumcision, after the rule of Moses, there is no salvation.

But some of the Pharisees, who were of the faith, got up and said, It is necessary for these to have circumcision and to keep the law of Moses.

Paul had a desire for him to go with him, and he gave him circumcision because of the Jews who were in those parts: for they all had knowledge that his father was a Greek.

And they have had news of you, how you have been teaching all the Jews among the Gentiles to give up the law of Moses, and not to give circumcision to their children, and not to keep the old rules.