"For I want you to know, brothers and sisters, that the gospel that was proclaimed by me is not of human origin; for I did not receive it from a human source, nor was I taught it, but I received it through a revelation of Jesus Christ. You have heard, no doubt, of my earlier life in Judaism. I was violently persecuting the church of God and was trying to destroy it. I advanced in Judaism beyond many among my people of the same age, for I was far more zealous for the traditions of my ancestors. But when God, who had set me apart before I was born and called me through his grace, was pleased to reveal his Son to me, so that I might proclaim him among the Gentiles, I did not confer with any human being, nor did I go up to Jerusalem to those who were already apostles before me, but I went away at once into Arabia, and afterwards I returned to Damascus. Then after three years I did go up to Jerusalem to visit Cephas and stayed with him fifteen days; but I did not see any other apostle except James the Lord's brother."(Gal 1:11-19)
"Last of all, as to one untimely born, he [Jesus] appeared also to me. For I am the least of the apostles, unfit to be called an apostle, because I persecuted the church of God. But by the grace of God I am what I am, and his grace toward me has not been in vain. On the contrary, I worked harder than any of them though it was not I, but the grace of God that is with me."
(1 Cor 15:8-10)