Verse 3
22:3 {1} I am verily a man [which am] a Jew, born in Tarsus, [a city] in Cilicia, yet brought up in this city at the {a} feet of Gamaliel, [and] taught according to the perfect manner of the law of the fathers, and was zealous toward God, as ye all are this day.
(1) Paul, making a short declaration of his former life, proves both his calling and doctrine to be from God.
(a) That is, his daily hearer: the reason of this speech is this: those who teach commonly sit in the higher place, speaking to their students who sit upon benches beneath, and therefore he says "at the feet of Gamaliel".