For the Son of God, Jesus Christ who was preached among you by us, by me, and Sylvanus, and Timothy, was not, It is and It is not, but, It is, was in him.
Jamieson, Fausset & Brown
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 Sa1 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 (Act 15:22; compare Pe1 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 (Co2 1:21-22) and of which miracles were only one, and that a subordinate manifestation.
Imported from an open dataset — not yet checked against the printed edition.