Also, Scripture says when Jesus returns (Rev. 19:18), an army follows Him. The army's members are riding on white horses, and they are clothed in fine linen that is white and clean. In Revelation 19:8, we are told that the fine linen is the righteousness of the saints. These are the Church-age Christians who were raptured into Heaven seven years previously.
The Scripture is more than clear that there will be an event in which Christians, both those who have died and those who are still alive, will be taken up to meet Christ and will never again be separated from Him.
And actually the word "Rapture" can be found in the Latin Vulgate so yes, the word "Rapture" is in the Bible. But, since the word "Bible" isn't in the Bible, does that mean that the Bible doesn't exist?
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The event is mentioned in 1 Thessalonians 4:17 where the Latin Vulgate has rapiemur, which may be translated as "we shall be raptured" or "we shall be caught up." Along with the Rapture it is said that Christians will be gathered together in the air to meet Christ. However, the Rapture's relationship to other eschatological events is a matter of hot dispute: second coming of Christ to take over the earth, Daniel's 70th Week, the "tribulation." Simultaneously at issue is whether or not the tribulation (or events of Revelation 6-18) are past, present, or future, literal or figurative.
The primary passage used to support this idea is 1 Thessalonians 4:15-17, in which Paul cites "the word of the Lord" about the return of Jesus to gather his saints.
...and the dead in Christ shall rise first: Then we which are alive and remain shall be raptured (or "caught up") together with them in the clouds, to meet the Lord in the air.
There are many views among Christians regarding the timing of Christ's return (one event or two), and various views regarding the destination of the 1 Thessalonians 4 aerial gathering:
Latin: "Rapture", in the context of eschatology, is an English noun derived from the Latin verb rapiō, "caught up" or "taken away." as found in the Vulgate rendering of 1 Thessalonians 4:17
Greek: The Latin rapiemur is Saint Jerome's translation of the Koine Greek verb ἁρπαγησόμεθα [harpagesometha], which means "we shall be caught up," "taken away," or "raptured." The dictionary form of this Greek verb is harpazō (ἁρπάζω), which is used only in 1 Thessalonians 4:17 and Acts 8:38.
Acts 8:39 "And when they were come up out of the water, the Spirit of the Lord caught away (Greek harpazo) Philip, that the eunuch saw him no more: and he went on his way rejoicing. Verse 40: But Philip was found at Azotus: and passing through he preached in all the cities, till he came to Caesarea." (KJV)
Strong's references 13 usages of harpazo in the New Testament.