Did I use lightness? — This, then, was the charge which he is anxious to refute. The question meets us, however, When had the Corinthians heard of the plan thus detailed? It had been already abandoned, as we have seen, before the first Epistle was despatched. Had it been communicated in a lost letter (see Note on 1 Corinthians 5:9)? or was this what Timotheus, who started before the first letter was written (1 Corinthians 4:17), had been authorised to announce? Either alternative is possible, and there is no evidence to enable us to decide which is most probable.
Do I purpose according to the flesh...? — The construction is somewhat involved. He may mean: (1) “Do I form my purposes after the flesh” (i.e., from worldly motives), “so as to catch the praise of consistency from those who harp on the rule that ‘Yes should be yes, and No, no’?” or (2) “Am I weak and worldly in my purpose, changing my plans, and saying ‘Yes’ and ‘No’ in almost the same breath?” On the whole, (2) seems to give the better sense. It is obvious that the words on which he dwells had been used of him by others. Some teacher of the party of the circumcision had, apparently, quoted the rule of the Sermon on the Mount (Matthew 5:37) and of St. James (James 5:12), and had asked, with a sneer, when the First Epistle came and showed that the original plan had been abandoned, whether this was the way in which St. Paul acted on it? The passage has accordingly the interest of being indirectly a reference to our Lord’s teaching, showing, like Acts 20:35, that “the words of the Lord Jesus” were habitually cited as rules of life.