The Necessity and Purpose of the Rapture, and the Question of Returning to Earth

First, the rapture of 1 Thessalonians 4 describes an event in which:

"The dead in Christ shall rise first: Then we which are alive and remain shall be caught up together with them in the clouds, to meet the Lord in the air."

At that moment, Christ is not yet on the earth. He descends to the air; the saints are caught up to meet Him there. The second coming in glory---the day of the Lord when He stands on the earth---is a distinct event.

The deeper question, however, is: Why have this rapture at all? Why not simply leave believers on earth until Christ returns visibly and bodily to the earth?

If Scripture is rightly divided, the rapture is not merely a "cool rescue event"; it is structurally necessary for God to keep His word. God's program for the present age is characterized by "neither Jew nor Greek"---a body in which ethnic distinctions do not govern standing before God. His program for Israel's kingdom, by contrast, is deeply bound up with ethnic Israel, the land, the covenants, and the visible rule of Messiah.

These two arrangements are mutually exclusive:

• The promises to Israel involve a covenanted nation, land, kingdom law, and an enduring-to-the-end framework.
• The promises to the body of Christ involve salvation by grace through faith apart from works, and a position "in Christ" that transcends ethnic and national categories.

God cannot run both programs concurrently for the same people without overturning His own commitments. If He simply left members of the body of Christ on earth when He resumes His direct dealings with Israel in the tribulation, He would place them under conditions that are not the ones He promised them. One who has been saved by grace through faith without works would find herself in a period where endurance to the end and faithfulness under tribulation pressures become criteria. That would amount to a "switch" in the terms under which God had pledged to relate to her.

To avoid that contradiction, He must:

1. Bring the present "neither Jew nor Greek" economy to a close, and
2. Fulfill His particular promises to the body of Christ by gathering them to Himself, before
3. Resuming His covenantal dealings with Israel leading up to the establishment of the kingdom.

That is exactly what the rapture accomplishes. It is not primarily about sparing believers from hardship (though they are indeed removed before the tribulation); it is about ending one administration faithfully so that the next administration, involving Israel and the kingdom, can begin without violating any promise.

As to what we will do "in the air," Scripture gives little detail. We know we will be:

"Caught up together with them in the clouds, to meet the Lord in the air: and so shall we ever be with the Lord."

The text emphasizes the manner of our coming into His presence and the permanence of our being "with the Lord," rather than detailing activities in the air. It is reasonable to infer that from that meeting point we are ushered into the heavenly court---perhaps among the myriads described in Revelation 4--5---where we share in worship and await the completion of the tribulation on earth. Later, when Christ returns to earth to reign, we return with Him and share in His kingdom administration.

A related question is why we would want to return to earth before the creation of the new earth. Several points can be made:

• During the millennial kingdom, the curse is significantly rolled back. Classic passages like Isaiah 11 portray a world in which predator and prey dwell together in peace, justice is administered perfectly, and the knowledge of the Lord covers the earth. Such a world would be profoundly desirable to experience.
• Christ Himself will reign on earth. For those who love Him, being where He is holds its own attraction.
• The millennial kingdom is a critical phase in God's revealed plan. To participate in that era---when the world finally sees how it was meant to function under righteous rule---is itself a blessing.

There is also discussion about the phrase "and so shall we ever be with the Lord." One could press that to require continuous, unbroken, immediate physical proximity. Yet grammatically the word "so" functions adverbially: it describes how we come to be with the Lord (being caught up to meet Him in the air), rather than providing a detailed geography of our eternal movements. It is therefore unwise to build an elaborate doctrine on that phrase alone about constant, spatial proximity. Still, it is sound to say that our eternal destiny is inseparably bound to His presence, whether in heaven's court or in His millennial and eternal rule.

In short, the rapture is necessary for God to keep distinct and intact His promises to the body of Christ and His promises to Israel. It removes those under the present grace economy before He resumes His kingdom dealings. What we will do "in the air" is not specified in detail, but the larger trajectory is clear: we meet Him, we remain with Him, and we share with Him in the unfolding of the ages, including His reign on earth.

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