Acts 11:2
When Peter was come up to Jerusalem, those that were of the circumcision contended with him,
Acts 10:45
And those of the circumcision who believed were astonished, as many as came with Peter, that also on the Gentiles the gift of the Holy Spirit was poured out.
Acts 10:9
On the morrow, as they went on their journey and drew near unto the city, Peter went up upon the housetop to pray about the sixth hour;
Acts 15:1
Then certain men who came down from Judaea taught the brethren and said, Except ye be circumcised after the manner of Moses, ye cannot be saved.
Acts 15:5
But there rose up certain of the sect of the Pharisees who had believed, saying, That it was needful to circumcise them and to command them to keep the law of Moses.
Acts 21:20-23
And when they heard it, they glorified the Lord and said unto him, Thou seest, brother, how many thousands of Jews there are who have believed, and they are all zealous of the law;
Galatians 2:12-14
For before certain ones came from James, he ate with the Gentiles, but when they were come, he withdrew and separated himself, fearing those who were of the circumcision.