The whole Rapture concept has only been around since mid-19th century.
Right If the apostle Paul was writing in the 19th century....
Really?! When was 1st. Thessalonians Chapter 4 written? More precisely, verses 13 thru 18? They are especially germaine to this discussion.
Correction, it's been around since around 30 AD when Jesus said, "That is how it will be at the coming of the Son of Man. Two men will be in the field; one will be taken and the other left. Two women will be grinding with a hand mill; one will be taken and the other left" (Matt 24:39-41).
Or a little later when Paul wrote, "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 which are alive and remain shall be caught up together with them in the clouds, to meet the Lord in the air: and so shall we ever be with the Lord" (1 Thess 4:16-17).
Demonstrably false ...