“The two threads which run through this Epistle—the defence of the Apostle’s own authority, and the maintenance of the doctrine of grace—are knotted together in the opening salutation. By expanding his official title into a statement of his direct commission from God, he meets the personal attack of his enemies; and by dwelling on the work of redemption in connection with the name of Christ (v. 4.) he resists their doctrinal errors.”—Lightfoot.—G.A.]