2 Thessalonians 3:16
Now may the Lord of peace Himself give you peace at all times and in every way. The Lord be with all of you.
What it says
Paul prays that the Lord of peace Himself will give them peace at all times and in every way, and that the Lord will be with them all.
What it is doing
It opens the closing with a benediction of peace and presence.
In context
16Now may the Lord of peace Himself give you peace at all times and in every way. The Lord be with all of you. 17This greeting is in my own hand — Paul. This is my mark in every letter; it is the way I write. 18The grace of our Lord Jesus Christ be with all of you.