Confirming the belief that most of the letter was dictated is the notification in verse 11 that Paul writes the remainder of the letter “with my own hand.” In drawing attention to the “large letters” with which he writes, Paul may give us the final clue as to why, upon his initial visit, the Galatians were willing to tear out their own eyes for him (4:15). The “thorn in my flesh” of 2 Corinthians 12:7 and the ailment that plagued him in Galatia may well be attributed to some form of eye disease. His handwriting may have been awkward, but it authenticated his letters. (See 2 Thess. 3:17, where the expression, “This is how I write,” may also be explained by such a theory.)

Here Paul takes the opportunity to personally emphasize the main point of his letter. The ones who trouble the Galatia…