You may think it is a man made Doctrine ----that is your right to think that ------but did it ever occur to you that just maybe you could be wrong -----
You are right about the world Rapture not appearing in the Scripture but the word CAUGHT UP--- is in the Scripture and appears a few times in scripture -----
Actually the Scriptures tell of 3 who were Caught UP by God ---2 were alive when God took them from this earth ----Enoch is one ---and Elijah is the other -----and then there was Jesus who was Caught up on a cloud in His Glorified body ---all were Raptured or Caught Up -----or Taken Up --or Went Up ----or Accented UP -----what ever words are used means they were Raptured -----
Hebrews 11:5
By faith Enoch
was taken up so that he did not see death: "He could not be found, because God had taken him away." For before he was taken, he was commended as one who pleased God
2 Kings 2:9-11---Here you see Elijah already knew God was carrying him up before it happened -----
Easy-to-Read Version
9 After they crossed the river, Elijah said to Elisha, “
What do you want me to do for you before God takes me away from you?”
Elisha said, “I ask you for a double share of your spirit on me.”
10 Elijah said, “You have asked a hard thing. If you see me when I am taken from you, it will happen.
But if you don’t see me when I am taken from you, it will not happen.”
The Lord Takes Elijah Into Heaven
11 Elijah and Elisha were walking and talking together. Suddenly, some horses and a chariot came and separated Elijah from Elisha. The horses and the chariot were like fire.
Then Elijah was carried up into heaven in a whirlwind.
Hebrew word ---To Take
Strong's Concordance
laqach: to take
seized , taken , took away,
be taken away, carried up , caught up ' removed Elijah 2 Kings 2:9
Greek word for caught up
Strong's Concordance
harpazó: to seize, catch up, snatch away
used of divine power transferring a person marvellously and swiftly from one place to another, to snatch or catch away:
Acts 8:39; passive, πρός τόν Θεόν,
Revelation 12:5; followed by ἕως with the genitive of place,
2 Corinthians 12:2; εἰς τόν παράδεισον,
2 Corinthians 12:4; εἰς ἀέρα,
1 Thessalonians 4:17.
Rapture comes from the Latin word Rapio