When a Christian dies they go in their spirit to heaven with Jesus.
Those who die before the coming of Jesus have their bodies in the grave, and their spirits in heaven. When Jesus comes again, he will bring with him the spirits of those who died.
1 Thessalonians 3:13
May he strengthen your hearts so that you will be blameless and holy in the presence of our God and Father when
our Lord Jesus comes with all his holy ones.
Then, Jesus will give the command, and the dead will rise with new bodies.
1 Thessalonians 4:16 For the Lord himself will come down from heaven, with a loud command, with the voice of the archangel and with the trumpet call of God, and the dead in Christ will rise first.
Then those who are still alive when Jesus comes, will be changed to new immortal bodies.
1 Corinthians 15:52 in a flash, in the twinkling of an eye, at the last trumpet. For the trumpet will sound, the dead will be raised imperishable, and we will be changed.
We will all be caught up in the clouds with Jesus in the air.
1 Thessalonians 4:…
15For this we say to you by the word of the Lord, that we who are alive and remain until the coming of the Lord, will not precede those who have fallen asleep.
16For the Lord Himself will descend from heaven with a shout, with the voice of the archangel and with the trumpet of God, and the dead in Christ will rise first.
17Then we who are alive and remain will be caught up together with them in the clouds to meet the Lord in the air, and so we shall always be with the Lord.…