5:9-15 The apostle quickens himself and others to acts of duty. Well-grounded hopes of heaven will not encourage sloth and sinful security. Let all consider the judgment to come, which is called, The terror of the Lord. Knowing what terrible vengeance the Lord would execute upon the workers of iniquity, the apostle and his brethren used every argument and persuasion, to lead men to believe in the Lord Jesus, and to act as his disciples. Their zeal and diligence were for the glory of God and the good of the church. Christ's love to us will have a like effect upon us, if duly considered and rightly judged. All were lost and undone, dead and ruined, slaves to sin, having no power to deliver themselves, and must have remained thus miserable for ever, if Christ had not died. We should not make ourselves, but Christ, the end of our living and actions. A Christian's life should be devoted to Christ. Alas, how many show the worthlessness of their professed faith and love, by living to themselves and to the world!
14. For—Accounting for his being "beside himself" with enthusiasm: the love of Christ towards us (in His death for us, the highest proof of it, Ro 5:6-8), producing in turn love in us to Him, and not mere "terror" (2Co 5:11).
constraineth us—with irresistible power limits us to the one great object to the exclusion of other considerations. The Greek implies to compress forcibly the energies into one channel. Love is jealous of any rival object engrossing the soul (2Co 11:1-3).
because we thus judge—literally, "(as) having judged thus"; implying a judgment formed at conversion, and ever since regarded as a settled truth.
that if—that is, that since. But the oldest manuscripts omit "if." "That one died for all (Greek, 'in behalf of all')." Thus the following clause will be, "Therefore all (literally, 'the all,' namely, for whom He 'died') died." His dying is just the same as if they all died; and in their so dying, they died to sin and self, that they might live to God their Redeemer, whose henceforth they are (Ro 6:2-11; Ga 2:20; Col 3:3; 1Pe 4:1-3).