Acts 7:8; Acts 10:45; Acts 11:2

Acts 7:8

8 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.

Acts 10:45

45 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.

Acts 11:2

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