1 Thessalonians 4:18

Wherefore. Or, “so then.” This verse presents the conclusion of Paul’s reasoning in vs. 13-17. He has explained the relationship of the dead and the living believers at the time of Christ’s coming, to set at rest the minds of the troubled Thessalonians who feared that their dead would not share in the benefits and glories of the Lord’s return.

Comfort one another. This is more than a suggestion. In a kindly way the apostle is commanding the believers to meditate on “these words” (vs. 13-17), to perceive their comforting import, and to share such consolation with one another so that all may be encouraged by their message.