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 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 15:24

Since we heard that some going out from us have troubled you with words subverting your souls, to whom we gave no charge,

Acts 21:20

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;

Acts 24:5

For finding this man a pestilence and a mover of sedition among all the Jews throughout the world, and a chief of the sect of the Nazoraeans,

Acts 26:5-6

who knew me from the first, if they would testify, that according to the strictest sect of our religion I lived a Pharisee.

Galatians 5:1-3

STAND firm in the liberty with which Christ has made you free, and be not again subject to a yoke of servitude.

Philippians 3:5-8

circumcised the eighth day, of the race of Israel, of the tribe of Benjamin, a Hebrew of the Hebrews, as to the law a Pharisee,

Treasury of Scripture Knowledge

Summary

But there rose up certain of the sect of the Pharisees which believed, saying, That it was needful to circumcise them, and to command them to keep the law of Moses.

Bible References

That it

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.
Galatians 5:1
STAND firm in the liberty with which Christ has made you free, and be not again subject to a yoke of servitude.