And just as it happened in the days of Noah, so it will be also in the days of the Son of Man: they were eating, they were drinking, they were marrying, they were being given in marriage, until the day that Noah entered the ark, and the flood came and destroyed them all.
It was the same as happened in the days of Lot: they were eating, they were drinking, they were buying, they were selling, they were planting, they were building; but on the day that Lot went out from Sodom it rained fire and brimstone from heaven and destroyed them all.
It will be just the same on the day that the Son of Man is revealed.
The days of Noah, and the activities people performed, don't have anything to do with the rapture: it has to do with the sudden destruction that comes upon them (Luke 17:26-37).
The point of the allegory is not about the rapture; it is about these three things:
- The signs of the times and what they point towards (sudden destruction);
- The failure of people to recognize those signs; and
- A failure to prepare one's self into the position of protection.
- e.g., blood on the doorposts and staying inside (Egypt & plagues);
- Being in the Ark, not swimming in the flood;
- Leaving Soddom towards safety; etc.
- All of which happened during judgment, all of which are examples of God protecting His own during an outpouring of judgment.