God is faithful, by whom you were called unto the fellowship of his Son Jesus Christ our Lord.
All Commentaries on 1 Corinthians 1:9 Go To 1 Corinthians 1
Clement Of Alexandria
AD 215
And when it is said, "God is faithful "it is intimated that He is worthy to be believed when declaring aught. Now His Word declares; and "God "Himself is "faithful.".
As "God "who by instruction is communicated to the faithful, "is faithful; "