5:10-14 In conclusion, the apostle prays to God for them, as the God of all grace. Perfect implies their progress towards perfection. Stablish imports the curing of our natural lightness and inconstancy. Strengthen has respect to the growth of graces, especially where weakest and lowest. Settle signifies to fix upon a sure foundation, and may refer to Him who is the Foundation and Strength of believers. These expressions show that perseverance and progress in grace are first to be sought after by every Christian. The power of these doctrines on the hearts, and the fruits in the lives, showed who are partakers of the grace of God. The cherishing and increase of Christian love, and of affection one to another, is no matter of empty compliment, but the stamp and badge of Jesus Christ on his followers. Others may have a false peace for a time, and wicked men may wish for it to themselves and to one another; but theirs is a vain hope, and will come to nought. All solid peace is founded on Christ, and flows from him.
14. kiss of charity—Ro 16:16, "an holy kiss": the token of love to God and the brethren. Love and holiness are inseparable. Compare the instance, Ac 20:37.
Peace—Peter's closing salutation; as Paul's is, "Grace be with you," though he accompanies it with "peace be to the brethren." "Peace" (flowing from salvation) was Christ's own salutation after the resurrection, and from Him Peter derives it.
be with you all that are in Christ Jesus—The oldest manuscripts omit "Jesus." In Eph 6:24, addressed to the same region, the same limitation of the salutation occurs, whence, perhaps, Peter here adopts it. Contrast, "Be with you all," Ro 16:24; 1Co 16:23.