Theological debates over Galatians typically swirl around issues involving the Pauline doctrine of sola fide–as well as the enduring relevance of Pauline anathemas to analogous situations in church history. And that’s a necessary debate. Every Christian generation must appropriate the truth for itself.
However, that emphasis can cause us to overlook an equally important and complementary emphasis in Galatians:
“For I would have you know, brothers, that the gospel that was preached by me is not man’s gospel. For I did not receive it from any man, nor was I taught it, but I received it through a revelation of Jesus Christ…But when he who had set me apart before I was born, and who called me by his grace, was pleased to reveal his Son to me, in order that I might preach him among the Gentiles, I did not immediately consult with anyone; nor did I go up to Jerusalem to those who were apostles before me, but I went away into Arabia, and returned again to Damascus (Gal 1:11-12,15-17).
Notice that, for Paul, it’s of paramount importance that the gospel be a divine deliverance. And that, in turn, is why exegesis is so important. That is why it’s incumbent on Christians to understand Paul on his own terms.
The real gospel is the revealed gospel. The gospel we preach is only as good as its divine source of origin. Hence, the gospel we preach must directly conform to that primitive revelatory deliverance. Tradition is no substitute for the revelation of the gospel.