Acts 15:5

But some from the sect of the Pharisees who had believed [in Jesus as the Messiah] stood up and said, “It is necessary to circumcise the Gentile converts and to direct them to observe the Law of Moses.”

Acts 15:1

Some men came down from Judea and began teaching the brothers, “Unless you are circumcised in accordance with the custom of Moses, you cannot be saved.”

Acts 15:24

Since we have heard that some of our men have troubled you with their teachings, causing distress and confusion—men to whom we gave no such orders or instructions—

Acts 21:20

And when they heard it, they began glorifying and praising God; and they said to him, “You see, brother, how many thousands of believers there are among the Jews, and they are all enthusiastic supporters of the Law [of Moses].

Acts 24:5

For we have found this man to be a public menace and one who instigates dissension among all the Jews throughout the world, and a ringleader of the [heretical] sect of the Nazarenes.

Acts 26:5-6

They have known me for a long time, if they are willing to testify to it, that according to the strictest sect of our religion, I have lived as a Pharisee.

Galatians 5:1-3

It was for this freedom that Christ set us free [completely liberating us]; therefore keep standing firm and do not be subject again to a yoke of slavery [which you once removed].

Philippians 3:5-8

circumcised when I was eight days old, of the nation of Israel, of the tribe of Benjamin, a Hebrew of Hebrews [an exemplary Hebrew]; as to the [observance of 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
Some men came down from Judea and began teaching the brothers, “Unless you are circumcised in accordance with the custom of Moses, you cannot be saved.”
Galatians 5:1
It was for this freedom that Christ set us free [completely liberating us]; therefore keep standing firm and do not be subject again to a yoke of slavery [which you once removed].