Galatians 1:12-14

12 For I did not receive it from man, nor was I taught [it] except by a revelation of Jesus Christ.

13 For you heard my manner of life when [I was] in Judaism, that I persecuted the church of God with surpassing [zeal], and ravaged it.

14 And I progressed in Judaism beyond many contemporaries in my race, being much more a zealot of the traditions of my fathers.