{9} When I therefore was thus minded, did I use lightness? or the things that I purpose, do I purpose according to the {p} flesh, that with me there should be {q} yea yea, and nay nay?

(9) He dismisses their slander and false report by denying it, and first of all in that different ones went about to persuade the Corinthians, that in the preaching of the Gospel, Paul agreed not to himself: for this was the matter and the case.

(p) As men do who will rashly promise anything, and change their purpose constantly.

(q) That I should say and not say a thing?

People's New Testament

1:17 When I therefore was thus minded, did I use lightness? Some of his detractors at Corinth had urged from his change of plans that he was fickle, or that he made ambiguous promises, and was ready to break them. His original plan was probably conveyed in the letter which has not come down to us (1Co 5:9). He declared his change of plans in 1Co 16:5.

Do I purpose according to the flesh? In a carnal way.

That with me there be yea, yea, and nay, nay? So that there should be a readiness to turn a yea into a nay; that is, no fixed purpose to do as promised.

Wesley's Notes

1:17 Did I use levity - Did I lightly change my purpose? Do I purpose according to the flesh - Are my purposes grounded on carnal or worldly considerations? So that there should be with me yea and nay - Sometimes one, sometimes the other; that is, variableness and inconstancy.

Jamieson-Fausset-Brown Bible Commentary

17. use lightness-Was I guilty of levity? namely, by promising more than I performed.

or . according to the flesh, that with me there should be yea, yea . nay, nay?-The "or" expresses a different alternative: Did I act with levity, or (on the other hand) do I purpose what I purpose like worldly (fleshly) men, so that my "yea" must at all costs be yea, and my "nay" nay [Bengel, Winer, Calvin], (Mt 14:7, 9)? The repetition of the "yea" and "nay" hardly agrees with Alford's view, "What I purpose do I purpose according to the changeable purposes of the fleshly (worldly) man, that there may be with me the yea yea, and the nay nay (that is, both affirmation and negation concerning the same thing)?" The repetition will thus stand for the single yea and nay, as in Mt 5:37; Jas 5:12. But the latter passage implies that the double "yea" here is not equivalent to the single "yea": Bengel's view, therefore, seems preferable.

Matthew Henry's Concise Commentary

1:15-24 The apostle clears himself from the charge of levity and inconstancy, in not coming to Corinth. Good men should be careful to keep the reputation of sincerity and constancy; they should not resolve, but on careful thought; and they will not change unless for weighty reasons. Nothing can render God's promises more certain: his giving them through Christ, assures us they are his promises; as the wonders God wrought in the life, resurrection, and ascension of his Son, confirm faith. The Holy Spirit makes Christians firm in the faith of the gospel: the quickening of the Spirit is an earnest of everlasting life; and the comforts of the Spirit are an earnest of everlasting joy. The apostle desired to spare the blame he feared would be unavoidable, if he had gone to Corinth before he learned what effect his former letter produced. Our strength and ability are owing to faith; and our comfort and joy must flow from faith. The holy tempers and gracious fruits which attend faith, secure from delusion in so important a matter.