A new creature is one in whom the image of God has been renewed. Such a creature cannot be brought into life by good works, but by Christ alone. Good works may improve the outward appearance, but they cannot produce a new creature. A new creature is the work of the Holy Ghost, who imbues our hearts with faith, love, and other Christian virtues, grants us the strength to subdue the flesh and to reject the righteousness of the world.
VERSE 16. And as many as walk according to this rule, peace be on them, and mercy.
This is the rule by which we ought to live, "that ye put on the new man, which after God is created in righteousness and true holiness." (Eph. 4:24.) Those who walk after this rule enjoy the favor of God, the forgiveness of their sins, and peace of conscience. Should they ever be overtaken by any sin, the mercy of God supports them.
VERSE 17. From henceforth let no man trouble me.
The Apostle speaks these words with a certain amount of indignation. "I have preached the Gospel to you in conformity with the revelation which I received from Jesus Christ. If you do not care for it, very well. Trouble me no more. Trouble me no more."
VERSE 17. For I bear in my body the marks of the Lord Jesus.
"The marks on my body indicate whose servant I am. If I was anxious to please men, if I approved of circumcision and good works as factors in our salvation, if I would take delight in your flesh as the false apostles do, I would not have these marks on my body. But because I am the servant of Jesus Christ and publicly declare that no person can obtain the salvation of his soul outside of Christ, I must bear the badge of my Lord. These marks were given to me against my will as decorations from the devil and for no other merit but that I made known Jesus."
Of the marks of suffering which he bore in his body the Apostle makes frequent mention in his epistles. "I think," he says, "that God hath set forth us the apostles last, as it were appointed to death: for we are made a spectacle unto the world, and to angels, and to men." (I Cor. 4:9.) Again, "Unto this present hour we both hunger, and thirst, and are naked, and are buffeted, and have no certain dwelling-place; And labour, working with our hands: being reviled, we bless; being persecuted, we suffer it; being defamed, we intreat: we are made as the filth of the world, and are the offscouring of all things unto this day." (I Cor. 4:11-13.)
VERSE 18. Brethren, the grace of our Lord Jesus Christ be with your spirit. Amen.
This is the Apostle's farewell. He ends his Epistle as he began it by wishing the Galatians the grace of God. We can hear him say: "I have presented Christ to you, I have pleaded with you, I have reproved you, I have overlooked nothing that I thought might be of benefit to you. All I can do now is to pray that our Lord Jesus Christ would bless my Epistle and grant you the guidance of the Holy Ghost."
The Lord Jesus Christ, our Savior, who gave me the strength and the grace to explain this Epistle and granted you the grace to hear it, preserve and strengthen us in faith unto the day of our redemption. To Him, the Father and the Son and the Holy Spirit, be glory, world without end. Amen.