I adamantly disagree that Jesus or the disciples ever acknowledged the notion a pre-tribulational collection of all believers, and every group of Christians until John Darby saw things the same way.
You can disagree with whatever you want. The truth is that scripture teaches the removal of the ekklesia of Christ prior to the last seven years. The age of the Gentiles ends and the last seven years of the 490 promised to Israel begins. It's why the people of the nation of Israel are now being gathered back to the land they were promised.