Galatians 1:6-24 New Revised Standard Version (NRSV)
There Is No Other Gospel
6 I am astonished that you are so quickly deserting the one who called you in the grace of Christ and are turning to a different gospel— 7 not that there is another gospel, but there are some who are confusing you and want to pervert the gospel of Christ. 8 But even if we or an angel[a] from heaven should proclaim to you a gospel contrary to what we proclaimed to you, let that one be accursed! 9 As we have said before, so now I repeat, if anyone proclaims to you a gospel contrary to what you received, let that one be accursed!
10 Am I now seeking human approval, or God’s approval? Or am I trying to please people? If I were still pleasing people, I would not be a servant[b] of Christ.
Paul’s Vindication of His Apostleship
11 For I want you to know, brothers and sisters,[c] that the gospel that was proclaimed by me is not of human origin; 12 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.
13 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. 14 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. 15 But when God, who had set me apart before I was born and called me through his grace, was pleased 16 to reveal his Son to me,[d] so that I might proclaim him among the Gentiles, I did not confer with any human being, 17 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.
18 Then after three years I did go up to Jerusalem to visit Cephas and stayed with him fifteen days; 19 but I did not see any other apostle except James the Lord’s brother. 20 In what I am writing to you, before God, I do not lie! 21 Then I went into the regions of Syria and Cilicia, 22 and I was still unknown by sight to the churches of Judea that are in Christ; 23 they only heard it said, “The one who formerly was persecuting us is now proclaiming the faith he once tried to destroy.” 24 And they glorified God because of me.