Galatians 6:18

Brethren
So he calls them, to testify his affection for them, notwithstanding their infirmity and instability, and the roughness with which he had treated them; and to show his great humility and condescension in owning the relation, and putting them on a level with himself, which the pride of the false teachers would not suffer them to do.

The grace of our Lord Jesus Christ be with your spirit:
which is his concluding benediction and usual salutation and token in all his epistles: he wishes that more gifts of grace might be bestowed upon them; that the Gospel of the grace of God might be continued with them; that the love of Christ might be shed abroad in their hearts; that they might receive out of his fulness grace for grace; that there might be an increase of grace in their souls; that it might abound in them, and they grow in the exercise of it: he does not pray that the law of Moses, or the righteousness of works, but that the grace of Christ might be with them; not in the mere notion of it, but in the spiritual experience of it; that it might be in their hearts, and with their spirits, quickening, comforting, and strengthening them; making them more spiritual and evangelical in their frames and duties, and freeing them from a carnal and legal spirit: to all which he sets his

Amen;
signifying his desire that so it might be, and his faith that so it would be. The subscription of the letter follows,

unto the Galatians, written from Rome;
where perhaps he was then a prisoner; the Arabic version adds, "by Titus and Luke": who might be sent with it, but the subscriptions of the epistles are not to be depended on.