Galatians is a letter that is full of doctrinal truth, but is no theological treatise.
It is a letter from a man who deeply loves the men and women he is writing to. 6.11-18 is his last appeal, his last invitation to keep trusting the gospel for salvation and living it out day by day, and he decides to ‘write to you with my own hand!’ (v.11).
Internal not external
First, he wants to convince them that real Christianity is a matter of inward change, not external observance. It is substantial, not superficial. Again, he focuses on the motives of the false teachers. They ‘want to make a good impression outwardly’ (v.12).
