1 Thessalonians 4:14-18

For if we believe that Jesus died and rose again, so also we believe that God will bring with him those who have fallen asleep as Christians. For we tell you this by the word of the Lord, that we who are alive, who are left until the coming of the Lord, will surely not go ahead of those who have fallen asleep. For the Lord himself will come down from heaven with a shout of command, with the voice of the archangel, and with the trumpet of God, and the dead in Christ will rise first. Then we who are alive, who are left, will be suddenly caught up together with them in the clouds to meet the Lord in the air. And so we will always be with the Lord. Therefore encourage one another with these words.