Paul did this to suit himself? Perhaps that is a statement lost in translation.
Saul of Tarsus, very learned in both Greek and Hebrew Scriptures, was part of the Sandhedrin, and an up and comer in Judaism who may well have ended up as the high priest of the Temple. He willingly began a vicious prosecution of the Christian heresy, and famously held the coats of the men who stoned the first martyr, Stephen, to death. He was given a commission to seek out and destroy Christianity in the provinces.
On the road to Damascus, he beheld Christ and was blinded, his sight restored by a Christian. The other disciples threw lots to pick Judas' successor, Jesus went out and found his own in a man who understood the Hebrew scriptures like few others and could explain it to the Gentiles in a language they could understand, Greek. And with this commission was given a new name, Paul, 'small and humble'.
Paul of Tarsus became a light unto the world down to this day. He planted seeds in fertile soil, the took nothing for himself; born a wealthy man, destined for high office in Jerusalem, he threw it all away to live as a pauper. Forsaking his home, wandering endlessly, he is beheaded as a Roman who loved God over Rome.