The Apostle Paul
Galatians 1:14ESV·traditional attribution

And I was advancing in Judaism beyond many of my own age among my people, so extremely zealous was I for the traditions of my fathers.

Matthew Henry Presbyterian @wholebiblehenry

What Paul had said more generally, in the preface of this epistle, he now proceeds more particularly to enlarge upon. There he had declared himself to be an apostle of Christ; and here he comes more directly to support his claim to that character and office.

Commenting on Galatians 1:10-24

John Gill Reformed Baptist @doctorgill

And profited in the Jews' religion,.... Or "in Judaism"; and the more he did so, or was versed in, and wedded to their principles, the more violent a persecutor he was. He was under a very considerable master, Gamaliel, a Rabbi of great note among the Jews; and he himself a youth of uncommon natural abilities, so that his proficiency in Jewish learning was very...

Albert Barnes Presbyterian @notesbybarnes

Verse 14. And profited. Made advances and attainments. He made advances not only in the knowledge of the Jewish religion, but also he surpassed others in his zeal in defending its interests, he had had better advantages than most of his countrymen; and by his great zeal and characteristic ardour, he had been able to make higher attainments than most others had done. Above many my equals. Marg.