Note 1 at Gal. 6:11: Once again, those who already have the misconception that Paul's thorn in the flesh was some chronic sickness (see notes 11-17 at 2 Cor. 12:7, p. 1041) use this verse to further their claims. They say Paul was nearly blind so that he had to write in huge letters and that is what he is referring to here.

That is certainly not the case. There are many possible explanations as to what Paul meant that do not include writing in two to three inch tall block letters. That would make this letter of Galatians an incredibly large book.

The scholar, J.B. Phillips, says, "According to centuries old Eastern usage, this could easily mean, 'I have pressed upon the pen in writing this.' Thus it could be translated, 'Notice how heavily I underline these words to you.'"

It could also very easily be referring to the length of this letter as a whole instead of the individual letters that comprised each word. Any letter which is five pages long when typed and single spaced could be considered a large letter.