In 1 Thes 4, Paul encourages the brethren to continue to live in a way that pleases God and urges them to do so even more, in order that they would be sanctified and live pure lives in accordance with their calling. Paul instructs them to lead a quiet life, working hard, so that through their daily lives they may win the respect of non-Christians. He concludes with some teaching about not grieving the deaths of believers, since "the dead in Christ will rise", and all Christians "will be caught up together with them in the clouds" to meet with the Lord upon His return. Then we will be together "with the Lord forever", and Paul instructs them to encourage each other with this thought.
Amen!