Tertullian (c.145–c.220)

Heresies, at the present time, will no less rend the church by their perversion of doctrine, than will Antichrist persecute her at that day by the cruelty of his attacks, except that persecution make seven martyrs, (but) heresy only apostates. (The Prescription Against Heretics, IV)

[A]nd that the beast Antichrist with his false prophet may wage war on the Church of God. (On the Resurrection of the Flesh, 25)

Now the privilege of this favour [be alive when Christ comes back] awaits those who shall at the coming of the Lord be found in the flesh, and who shall, owing to the oppressions of the time of Antichrist, deserve by an instantaneous death [i.e., raptured/translation], which is accomplished by a sudden change, to become qualified to join the rising saints; as he writes to the Thessalonians [1 Thess 4:15–17]. (On the Resurrection of the Flesh, 41)