First Thessalonians 4:13-18
13 We want you to be quite certain, brothers, about those who have fallen asleep, to make sure that you do not grieve for them, as others do who have no hope.
14 We believe that Jesus died and rose again, and that in the same way God will bring with him those who have fallen asleep in Jesus.
15 We can tell you this from the Lord’s own teaching, that we who are still alive for the Lord’s coming will not have any advantage over those who have fallen asleep.
16 At the signal given by the voice of the Archangel and the trumpet of God, the Lordhimself will come down from heaven; those who have died in Christ will be the first to rise,
17 and only after that shall we who remain alive be taken up in the clouds, together with them, to meet the Lord in the air. This is the way we shall be with the Lord for ever.
18 With such thoughts as these, then, you should encourage one another.