Jamieson, Fausset & Brown

faithful--to His promises (Phi 1:6; Th1 5:24). called--according to His purpose (Rom 8:28). unto . . . fellowship of . . . Jesus--to be fellow heirs with Christ (Rom 8:17-28), like Him sons of God and heirs of glory (Rom 8:30; Th2 2:14; Pe1 5:10; Jo1 1:3). CHRYSOSTOM remarks that the name of Christ is oftener mentioned in this than in any other Epistle, the apostle designing thereby to draw them away from their party admiration of particular teachers to Christ alone.