For the Son of God, Jesus Christ, who was preached among you by us, even by me and Silvanus and Timotheus, was not yea and nay, but in him was yea.
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 co-equal with God Himself (cf. 1 Samuel 15:29; Malachi 3:6).
By me and Silvanus and Timotheus. The Son of God, though preached by different preachers, proved to be one and the same. Silvanus is contracted into Silas, Acts 15:22: cf. 1 Peter 5:12.
Was not yea and nay, but in him was yea, х egeneto (G1096) ... gegonen (G1096)] - 'was not made, in our preaching and its results, yea and nay, but is made yea in Him' - i:e., is confirmed as true in Him by the Spirit which He has given us in our union with Him (2 Corinthians 1:21-22), of which Spirit miracles were a subordinate manifestation. Christ preached by us proved to be yea (i:e., fulfilled) in Christ Himself (Bengel).