Overview of Galatians 1
The theme of this chapter is that there is one true Gospel and that this is the only way of salvation. The Gospel is all about how Jesus has delivered us from evil. This was God’s will and plan, it is for his glory.[1]
Paul is concerned that the Galatians are being led astray by opponents who have crept into the church, so he emphasises that the Gospel is not to be replaced or altered in anyway. The true Gospel is what has come direct from Jesus Christ. He is so keen to emphasise this and so he shows that he received the message directly from the Lord. It is not something he has borrowed and adapted from other Christians for his own purposes, not even from the apostles. Rather, he and the apostles received it independently and were able to verify it. This would be important to hearers of the day where there was an emphasis on having at least two witnesses.
[1] Galatians 1:4.