Paul wraps up his second letter to the Thessalonians by reminding them that their whole lives—past, present, and future—stand on God’s grace and lead to His peace, which is why he always opens and closes his letters with those two words. He encourages them to stay faithful, keep working hard, avoid getting spiritually lazy, and live out the gospel in real life so others can clearly see Christ in them. In the end, he wants them anchored in grace, steadied by peace, and committed to the mission of representing Jesus until He returns.