Acts 26:5

having knowledge of me from the first, if they be willing to testify, that after the straitest sect of our religion I lived a Pharisee.

Acts 23:6

But when Paul perceived that the one part were Sadducees and the other Pharisees, he cried out in the council, Brethren, I am a Pharisee, a son of Pharisees: touching the hope and resurrection of the dead I am called in question.

Acts 22:3

I am a Jew, born in Tarsus of Cilicia, but brought up in this city, at the feet of Gamaliel, instructed according to the strict manner of the law of our fathers, being zealous for God, even as ye all are this day:

Acts 24:5

For we have found this man a pestilent fellow, and a mover of insurrections among all the Jews throughout the world, and a ringleader of the sect of the Nazarenes:

Acts 22:5

As also the high priest doth bear me witness, and all the estate of the elders: from whom also I received letters unto the brethren, and journeyed to Damascus to bring them also that were there unto Jerusalem in bonds to be punished.

Acts 24:14

But this I confess unto thee, that after the Way which they call a sect, so serve I the God of our fathers, believing all things which are according to the law, and which are written in the prophets;

Philippians 3:5-6

circumcised the eighth day, of the stock of Israel, of the tribe of Benjamin, a Hebrew of Hebrews; as touching the law, a Pharisee;

Treasury of Scripture Knowledge

Summary

Which knew me from the beginning, if they would testify, that after the most straitest sect of our religion I lived a Pharisee.

Bible References

If

Acts 22:5
As also the high priest doth bear me witness, and all the estate of the elders: from whom also I received letters unto the brethren, and journeyed to Damascus to bring them also that were there unto Jerusalem in bonds to be punished.

That

Acts 23:6
But when Paul perceived that the one part were Sadducees and the other Pharisees, he cried out in the council, Brethren, I am a Pharisee, a son of Pharisees: touching the hope and resurrection of the dead I am called in question.
Philippians 3:5
circumcised the eighth day, of the stock of Israel, of the tribe of Benjamin, a Hebrew of Hebrews; as touching the law, a Pharisee;

American Standard Version Public Domain