Rapture is not in the Bible. The word is never used. It is a word that has been adopted from the Latin word raptus, which means “to seize”.
Rapture is understood to be the event when Jesus “seizes” or catches up believers in the air.
The scriptural reference is 1 Thess 4:16-18 – For the Lord Himself will descend from heaven with a shout, with the voice of an archangel, and with the trumpet of God. And the dead in Christ will rise first. Then we who are alive and remain shall be caught up together with them in the clouds to meet the Lord in the air. And thus we shall always be with the Lord. Therefore comfort one another with these words.
The idea behind the rapture is said to have begun with Margaret Macdonald in 1830. Non-rapture enthusiasts say the doctrine did not exist until then. There is no mention of it before that time in church teaching.
Of course there it is in 1 Thessalonians. Now whether it happens before, during, or after any other event, such as the tribulation or millennium, is another debated subject.
Nowhere in the Old Testament does it mention Jesus (or Yeshua) of Nazareth either. He is not named by Isaiah, Moses, or David as the Messiah.
The belief of Jesus as savior did not exist before the early part of the first century.
In the beginning of this thought, there were only about 120 that believed it.
Just because He is not directly named in O.T. scripture does not mean it is not true.
Just because the belief did not exist before the first century does not mean it’s not true.
Why is it so many do not find comfort in Paul’s words of 1 Thessalonians? They find dread and disbelief.
I now believe and find comfort in many things supported with scripture, which I did not believe or know about until a few years ago. Studying expands knowledge.