Footnote

b Paul’s writings indicate that he suffered from problems with his eyesight, which would have made it difficult for him to write letters and to carry out his ministry. (Gal. 4:15; 6:11) Or Paul may have been referring to the anxiety some false teachers were causing him. (2 Cor. 10:10; 11:5, 13) Whatever the source of his concern, it was distressing to Paul.