{11} For the Son of God, Jesus Christ, who was preached among you by us, even by me and Silvanus and Timotheus, {s} was not yea and nay, but in {t} him was yea.

(11) He adds also with himself his companions, as witnesses with whom he fully consented in teaching the same thing, that is, the same Christ.

(s) Was not different and wavering.

(t) That is, in God.

People's New Testament

1:19 For the Son of God... was not yea and nay. The idea is that there was no vacillation and uncertainty about Paul's preaching when he was in Corinth.

But in him was yea. There was positive affirmation.

Wesley's Notes

1:19 For Jesus Christ, who was preached by us - That is, our preaching concerning him. Was not yea and nay - Was not variable and inconsistent with itself. But was yea in him - Always one and the same, centering in him.

Jamieson-Fausset-Brown Bible Commentary

19. Proof of the unchangeableness of the doctrine from the unchangeableness of the subject of it, namely, Jesus Christ. He is called "the Son of God" to show the impossibility of change in One who is co-equal with God himself (compare 1Sa 15:29; Mal 3:6).

by me . Silvanus and Timotheus-The Son of God, though preached by different preachers, was one and the same, unchangeable. Silvanus is contracted into Silas (Ac 15:22; compare 1Pe 5:12).

in him was yea-Greek, "is made yea in Him"; that is, our preaching of the Son of God is confirmed as true in Him (that is, through Him; through the miracles wherewith He has confirmed our preaching) [Grotius]; or rather, by the witness of the Spirit which He has given (2Co 1:21, 22) and of which miracles were only one, and that a subordinate manifestation.

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.