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.

18. He adds this lest they might think his DOCTRINE was changeable like his purposes (the change in which he admitted in 2Co 1:17, while denying that it was due to "lightness," and at the same time implying that not to have changed, where there was good reason, would have been to imitate the fleshly-minded who at all costs obstinately hold to their purpose).

true—Greek, "faithful" (1Co 1:9).

our word—the doctrine we preach.

was not—The oldest manuscripts read "is not."

yea and nay—that is, inconsistent with itself.