12 We pray this so that the name of our Lord Jesus may be glorified in you, and you in him, according to the grace of our God and the Lord Jesus Christ.a

Read 2 Thessalonians 1:12 Using Other Translations

That the name of our Lord Jesus Christ may be glorified in you, and ye in him, according to the grace of our God and the Lord Jesus Christ.
so that the name of our Lord Jesus may be glorified in you, and you in him, according to the grace of our God and the Lord Jesus Christ.
Then the name of our Lord Jesus will be honored because of the way you live, and you will be honored along with him. This is all made possible because of the grace of our God and Lord, Jesus Christ.