Honestly… I thought that the Christian Rapture was a religious concept going back to the very beginning of the religion.

Nope. John Nelson Darby created it in the 1800s, after he had a fall and a knocked his nogging real hard.

Look him up. It’s a hoot.

@GayDeceiver writing from Germany I had to look up Christian Rapture in the dictionary and my impression: it seems to be something very American.
@Josteglitz @GayDeceiver Darby (the guy who invented the concept) was Irish I think. But his ideas only really took off when they were added as study notes to the Scofield Reference Bible, which sold like hotcakes in the United States. So you're correct, quite American.
@FrChazzz @Josteglitz @GayDeceiver yeah the same. No rapture in Luther's bible.