Therefore encourage and build one another up, just as you are already doing.
Comfort one another with the resurrection, Christ's return, predestination, and His finished work, the law fulfilled, justice satisfied, sins atoned, salvation accomplished. Exhort each other to sobriety and watchfulness, not sleep and sin; put on God's armor. Edify through prayer and Gospel conversation, shun corrupt speech that breeds wrath and destroys principles.
AI summary
comfort yourselves--Greek, "one another." Here he reverts to the same consolatory strain as in Th1 4:18. edify one another--rather as Greek, "edify (ye) the one the other"; "edify," literally, "build up," namely, in faith, hope, and love, by discoursing together on such edifying topics as the Lord's coming, and the glory of the saints (Mal 3:16).
We must comfort and exhort one another, studying what builds up those around us. Cain was wrong to ask if he kept his brother; we must bear one another's burdens. By the same proximity that gives believers the greatest opportunity to edify, we bear the greatest obligation, through shared knowledge, prayer, example, and counsel we strengthen the whole church.
AI summary
Commenting on 1 Thessalonians 5:11-15