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 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 15:24

Inasmuch as we have heard that some who went out from amongst us have troubled you by words, upsetting your souls, saying that ye must be circumcised and keep the law; to whom we gave no commandment;

Acts 21:20

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.

Acts 24:5

For finding this man a pest, and moving sedition among all the Jews throughout the world, and a leader of the sect of the Nazaraeans;

Acts 26:5-6

who knew me before from the outset of my life, if they would bear witness, that according to the strictest sect of our religion I lived a Pharisee.

Galatians 5:1-3

Christ has set us free in freedom; stand fast therefore, and be not held again in a yoke of bondage.

Philippians 3:5-8

as to circumcision, I received it the eighth day; of the race of Israel, of the tribe of Benjamin, Hebrew of 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 Judaea, taught the brethren, If ye shall not have been circumcised according to the custom of Moses, ye cannot be saved.
Galatians 5:1
Christ has set us free in freedom; stand fast therefore, and be not held again in a yoke of bondage.