Acts 11:2
And when Peter went up to Jerusalem, those of the circumcision contended with him,
Acts 10:45
And those of the circumcision who came with Peter were astonished, that on the gentiles also the gift of the Holy Spirit was poured out;
Acts 10:9
And on the next day, as they were pursuing their journey and had come nigh to the city, Peter went upon the house to pray, about the sixth hour.
Acts 15:1
AND certain persons having come down from Judea taught the brothers, If you are not circumcised according to the custom of Moses you cannot be saved.
Acts 15:5
But some of those of the sect of the Pharisees who had believed, rose and said, that it is necessary to circumcise them, and to command them to keep the law of Moses.
Acts 21:20-23
and having heard, they glorified God, and said to him, You see, brother, how many ten thousands there are of those who have believed, among the Jews, and all are zealots of the law;
Galatians 2:12-14
For before some came from James he eat with the gentiles; but when they came, he withdrew and separated himself; fearing those of the circumcision;