1Paul, an apostle—not from men, nor through man, but through Jesus Christ, and God the Father, who raised him from the dead— 2and all the brothers who are with me, to the assemblies of Galatia: 3Grace to you and peace from God the Father and our Lord Jesus Christ, 4who gave himself for our sins, that he might deliver us out of this present evil age, according to the will of our God and Father— 5to whom be the glory forever and ever. Amen.
6I marvel that you are so quickly deserting him who called you in the grace of Christ to a different “good news”, 7but there isn’t another “good news.” Only there are some who trouble you and want to pervert the Good News of Christ. 8But even though we, or an angel from heaven, should preach to you any “good news” other than that which we preached to you, let him be cursed. 9As we have said before, so I now say again: if any man preaches to you any “good news” other than that which you received, let him be cursed.
10For am I now seeking the favor of men, or of God? Or am I striving to please men? For if I were still pleasing men, I wouldn’t be a servant of Christ.
11But I make known to you, brothers, concerning the Good News which was preached by me, that it is not according to man. 12For I didn’t receive it from man, nor was I taught it, but it came to me through revelation of Jesus Christ. 13For you have heard of my way of living in time past in the Jews’ religion, how that beyond measure I persecuted the assembly of God and ravaged it. 14I advanced in the Jews’ religion beyond many of my own age among my countrymen, being more exceedingly zealous for the traditions of my fathers. 15But when it was the good pleasure of God, who separated me from my mother’s womb and called me through his grace, 16to reveal his Son in me, that I might preach him among the Gentiles, I didn’t immediately confer with flesh and blood, 17nor did I go up to Jerusalem to those who were apostles before me, but I went away into Arabia. Then I returned to Damascus.
18Then after three years I went up to Jerusalem to visit Peter, and stayed with him fifteen days. 19But of the other apostles I saw no one except James, the Lord’s brother. 20Now about the things which I write to you, behold, before God, I’m not lying. 21Then I came to the regions of Syria and Cilicia. 22I was still unknown by face to the assemblies of Judea which were in Christ, 23but they only heard, “He who once persecuted us now preaches the faith that he once tried to destroy.” 24So they glorified God in me.
Paul begins his teaching with the words "I marvel." He is overcome that from the time he began these churches with the pure Gospel that they would allow it to be corrupted by false doctrine that moves them from "good news" of grace to another so called "good news" of the law (v 6). Rather than giving "good news" to the Galatians they are perverting the Good News of Jesus, which is of God's undeserved favor rather than human effort to obey the law of Moses (v 7).
In verses 8-9 the apostle then emphasizes the drastic move that the Galatians have made in highly picturesque language: "Even though we, or an angel from heaven, should preach to you any 'good news' other than that which we preached to you, let him be cursed." The Greek word "anathema"has sometimes been wrongly translated "eternally condemned," but "cursed" is the proper translation (v 8). Paul uses the term in the Jewish sense of being under humans God's judgment rather than being under His blessing (as was true of the Israelites in Deut 29:22 through Deut 30:1-10), not eternal condemnation.