1 Thessalonians 4:17

"For the Lord Himself shall descend from heaven, with a shout, with the voice of the Archangel, and with the trump of God: and the dead in Christ shall rise first: then we that are alive, that are left, shall together with them be caught up in the clouds, to meet the Lord in the air: and so shall we ever be with the Lord." But wherefore with the trumpet? For we see this on Mount Sinai too, and Angels there also. But what means the voice of the Archangel? As he said in the parable of the Virgins, Arise! "The Bridegroom cometh." (From Matt. xxv. 6) Either it means this, or that as in the case of a king, so also shall it then be, Angels ministering at the Resurrection. For He says, let the dead rise, and the work is done, the Angels not having power to do this, but His word. As if upon a king's commanding and saying it, those who were shut up should go forth, and the servants should lead them out, yet they do this not from their own power, but from that Voice. This also Christ says in another place: "He shall send forth his Angels with a great trumpet, and they shall gather together his Elect from the four winds, from one end of heaven to the other." (Matt. xxiv. 31) And everywhere you see the Angels running to and fro. The Archangel therefore I think is he, who is set over those who are sent forth, and who shouts thus: "Make all men ready, for the Judge is at hand." And what is "at the last trumpet"? Here he implies that there are many trumpets, and that at the last the Judge descends. If He is about to descend, on what account shall we be caught up? For the sake of honor. For when a king drives into a city, those who are in honor go out to meet him; but the condemned await the judge within. And upon the coming of an affectionate father, his children indeed, and those who are worthy to be his children, are taken out in a chariot, that they may see and kiss him; but those of the domestics who have offended remain within. We are carried upon the chariot of our Father. For He received Him up in the clouds, and "we shall be caught up in the clouds." (Acts i. 9) Seest thou how great is the honor? and as He descends, we go forth to meet Him, and, what is more blessed than all, so we shall be with Him. But as to the saying, that they are gathered together; they arise indeed everywhere, but are gathered together by the Angels. The former therefore is the work of the power of God commanding the earth to give up its deposit, and there is no one who ministers in it, as He then called Lazarus, "Lazarus, come forth" (John xi. 43); but the gathering is the work of ministers. But if Angels gather them together, and run to and fro, how are they caught up here? They are caught up after the descent, after that they are gathered together.

"The hour cometh," saith He. Doubtless thou, imbued with a faith of the resurrection of the flesh, didst look for the hour of the end of the world, which, that thou shouldst not look for here, He added, "and now is." Therefore He saith not this, "The hour cometh," of that last hour, when "at the command and the voice of the archangel and the trump of God, the Lord Himself shall descend from heaven, and the dead in Christ shall rise first; then we who are alive and remain shall be caught up together with them in the clouds, to meet Christ in the air: and so shall we be ever with the Lord." That hour will come, but is not now. But consider what this hour is: "The hour cometh, and now is." What happens in that hour? What, but a resurrection of the dead? And what kind of resurrection? Such that they who rise live for ever. This will be also in the last hour.