John Calvin Commentary 2 Thessalonians 1:12

"that the name of our Lord Jesus may be glorified in you, and ye in him, according to the grace of our God and the Lord Jesus Christ." — 2 Thessalonians 1:12 (ASV)

That the name of our Lord Jesus Christ may be glorified. He calls us back to the chief end of our whole life — that we may promote the Lord’s glory. What he adds, however, is especially noteworthy, that those who have advanced the glory of Christ will also in turn be glorified in him.

For in this, first of all, the wonderful goodness of God shines forth — that he will have his glory be conspicuous in us who are covered over with disgrace. This, however, is a twofold miracle, that he afterward irradiates us with his glory, as if he would do the same to us in return.

On this account he adds, according to the grace of God and Christ. For there is nothing here that is our own, either in the action itself or in its effect or fruit, for it is solely by the guidance of the Holy Spirit that our life is made to contribute to the glory of God. And the fact that so much fruit arises from this should be ascribed to the great mercy of God. Meanwhile, if we are not worse than stupid, we must strive with all our might to advance the glory of Christ, which is connected with our own. I consider it unnecessary to explain now in what sense he represents the glory as belonging to God and Christ in common, since I have explained this elsewhere.