The Apostle Paul
1 Thessalonians 4:17ESV·traditional attribution

Then we who are alive, who are left, will be caught up together with them in the clouds to meet the Lord in the air, and so we will always be with the Lord.

John Calvin Reformed @genevareformer

17 And so we shall be ever. To those who have been once gathered to Christ he promises eternal life with him, by which statements the reveries of Origen and of the Chiliasts See Calvin’s Institutes, vol. 2. are abundantly refuted. For the life of believers, when they have once been gathered into one kingdom, will have no end any more than Christ’s.

Matthew Henry Presbyterian @wholebiblehenry

In these words the apostle comforts the Thessalonians who mourned for the death of their relations and friends that died in the Lord. His design is to dissuade them from excessive grief, or inordinate sorrow, on that account. All grief for the death of friends is far from being unlawful; we may weep at least for ourselves if we do not weep for them, weep...

Commenting on 1 Thessalonians 4:13-18

John Gill Reformed Baptist @doctorgill

Then we which are alive and remain,.... See Gill on Th1 4:15. shall be caught up; suddenly, in a moment, in the twinkling of an eye, and with force and power; by the power of Christ, and by the ministry and means of the holy angels; and to which rapture will contribute, the agility which the bodies both of the raised and changed saints will...