Acts 11:2
and when Peter went up to Jerusalem, they of the circumcision contended with him,
Acts 10:45
And the faithful of the circumcision were astonished, as many as came with Peter, that upon the nations also the gift of the Holy Spirit was poured out:
Acts 10:9
And on the morrow, as these were journeying and drawing near to the city, Peter went up on the house to pray, about the sixth hour.
Acts 15:1
And certain persons, having come down from Judaea, taught the brethren, If ye shall not have been circumcised according to the custom of Moses, ye cannot be saved.
Acts 15:5
And some of those who were of the sect of the Pharisees, who believed, rose up from among them, saying that they ought to circumcise them and enjoin them to keep the law of Moses.
Acts 21:20-23
And they having heard it glorified God, and said to him, Thou seest, brother, how many myriads there are of the Jews who have believed, and all are zealous of the law.
Galatians 2:12-14
for before that certain came from James, he ate with those of the nations; but when they came, he drew back and separated himself, fearing those of the circumcision;