Eschatology is the study of last things. The word “eschatology” comes from the Greek word eschatos, meaning “last.” From this same Greek word is derived the term “eschaton,” which is sometimes used to refer to the end times.

Eschatology deals with such future events as the end of the world, Jesus’ return, the resurrection, the final judgment, and the afterlife in heaven or hell. The tribulation and the millennium also belong to eschatology, but their timing and nature vary with different views. Although from one perspective human history entered its final phase in NT times so that people today are already living in the “last days,” eschatology normally focuses on the unfulfilled prophecies that remain still in the future for present-day believers.

Eschatology deals with questions regarding the future. Every religion and philosophy of life has offered answers to these questions. Plato taught about the immortality of the soul. Buddhism has its nirvana, Islam its sensual paradise, and Native Americans their happy hunting grounds. The belief that the soul survives death is widely held. Even atheists and materialists have their own views of eschatology. Yet only in Christianity does eschatology become the crown and capstone of everything else that God has been doing throughout history, when he will be perfectly glorified, Christ completely victorious, the power of sin entirely overcome, and the people of God given a complete salvation.

Yet it is difficult to find a topic on which Christians are more divided. Frequently, people studying eschatology fall into one of two opposite traps: unwarranted dogmatism or simple avoidance. Yet eschatology should be a source of comfort and hope to believers as well as an ongoing reminder of the lateness and urgency of the hour. Consequently, eschatology deserves most careful attention and should create a sense of excitement and anticipation.

Reasons for Controversy

Eschatology is by no means a simple discipline. The sheer magnitude of this topic is a significant challenge involving hundreds of different unfulfilled prophecies from virtually every book of the Bible. Difficulties in interpreting these prophecies with their figures of speech, apocalyptic language, and complicated symbolism create still greater complications. Then there is the challenge of organizing these individual prophecies together into a coherent timeline when each will be fulfilled. Discerning the period of fulfillment for some prophecies is relatively clear and easy, but for others it is much less certain.

Even the question of how many periods of future time remain in God’s timetable has often been the source of considerable debate. For example, will there be a future period of tribulation, or were these prophecies already fulfilled in AD 70, or perhaps more generally throughout church history, with its countless martyrs? Similar questions have been raised about the millennium: is this to be understood in a still future sense, as premillennialists assert, or is it already in the process of being fulfilled, as amillennialists and postmillennialists claim? The fact that there is no common agreement even on these fundamental questions virtually guarantees that believers will remain divided on this issue.

Then too there is the final step of trying to assign specific unfulfilled prophecies into this grid of prophetic time slots. For example, is the prophecy “The wolf and the lamb will feed together, and the lion will eat straw like the ox” (Isa. 65:25) a symbolic picture of God’s blessings in this present church age, in a future millennium, or in eternity itself? The vast majority of these unfulfilled prophecies contain few clues regarding the precise time of their fulfillment, and interpreters often are left with little to guide them. We should not be surprised that eschatology leaves believers more divided than do other areas of theology.

Jesus’ Return and the Tribulation

The fact of Jesus’ return is clear. When Jesus was taken up from his apostles at the end of his earthly ministry, two angels promised them, “This same Jesus, who has been taken from you into heaven, will come back in the same way you have seen him go into heaven” (Acts 1:11). Today believers look forward to Jesus’ second coming, as “the blessed hope” (Titus 2:13). The common understanding has always been that this return will be personal, visible, and bodily—just as real as his first coming two thousand years ago.

Christians, however, have been divided over the timing of Jesus’ return and the tribulation. Here there are five interrelated questions.

1. The first question is whether Jesus’ return is a single event or will occur in two stages. Dispensationalists distinguish two phases to Jesus’ return: a secret rapture that removes the church from a period of intense tribulation involving Israel here on earth, and then a later public second coming in judgment at the end of the tribulation, when he will establish his kingdom. A number of recent “left behind” books and movies have popularized this approach. Yet this two-stage model is difficult to document in Scripture, and many understand Scripture to describe Jesus’ return as a single unified event.

2. How one answers this first question has implications for the second question of the timing of Jesus’ return relative to the tribulation. Here there are three popular options regarding the timing of Jesus’ return: pretribulational (before the tribulation), midtribulational (in the midst of the tribulation), and posttribulational (after the tribulation). Yet if Jesus’ return is pretribulational or midtribulational, logic would require that there be two phases to Jesus’ return: a secret rapture either before the tribulation (for pretribulationalism) or in the middle of it (for midtribulationalism), and then a separate public return at the conclusion of the tribulation to establish his kingdom. Thus, a two-stage return of Jesus goes hand in hand with pretribulationalism and midtribulationalism, and a single return with posttribulationalism.

3. A third question focuses on the nature of the tribulation period. There are three main views. Pretribulationalists assume that the tribulation will be a period (usually seven years) of great suffering such as this world has never seen. Midtribulationalists believe that Jesus will return after three and a half years of less intense tribulation, followed by a considerably more intense second period of three and a half years of wrath, from which believers will be spared. Posttribulationalists see this tribulation as the suffering and persecution of Christians at various times and places around the world, with possibly some intensification in the final days. Consequently, how one understands the intensity of the tribulation is another factor affecting the choice of one tribulational view or another.

4. A fourth interrelated question involves whether one believes that Jesus may return suddenly and unexpectedly at any moment (Matt. 24:42) or whether there are still unfulfilled prophecies that must take place first (initially including at least Peter’s death [John 21:19] and the destruction of the temple in Jerusalem). Pretribulationalists pride themselves on how their view of a secret rapture allows for Jesus to return imminently without any intervening signs or other warnings. Midtribulationalists believe that the church will need to experience three and a half years of moderate tribulation, so there is less emphasis on an imminent return (although one could argue that the first period of tribulation is potentially more ambiguous in nature). Posttribulationalists are divided into two groups. Many have held that the tribulation will be a period of significant tribulation, so typically they have downplayed the idea of imminence. However, other posttribulationalists (sometimes called “pasttribulationalists” or “imminent posttribulationalists”) assume that the tribulation described in Scripture may already be fulfilled either at the time of the destruction of Jerusalem in AD 70 or more generally throughout church history, and therefore Jesus may return at any time.

5. The fifth question focuses on how literally or figuratively one should interpret the two key passages of Scripture related to the nature of the tribulation: the Olivet Discourse (Matt. 24 pars.) and Rev. 6–19. Much of the Olivet Discourse focuses on the destruction of Jerusalem in AD 70, and many have understood at least parts of Revelation as being fulfilled historically either in John’s own day or during church history. The more one assumes that at least portions of these prophecies were already fulfilled, the less one awaits a future fulfillment. A more literal approach to these prophecies will predispose one toward pretribulationalism or possibly midtribulationalism, and a more figurative approach toward posttribulationalism.

Hyperpreterism, or consistent preterism, has emerged in the last few decades with a still different approach to the timing of Jesus’ return. The driving force behind this movement is Jesus’ apparent promise to return within a generation of his death (Matt. 24:34). Consequently, hyperpreterism has assumed that all the future prophecies in the NT must have been fulfilled by the time of the destruction of Jerusalem in AD 70, including Jesus’ return, the bodily resurrection, the final judgment, and the new heaven and new earth. The bottom line is that in order to take literally Jesus’ promise to return within a generation, everything else in eschatology needs to be reinterpreted as having been fulfilled in one way or another within that same generation. A more moderate preterism sees many, but not all, of these eschatological events fulfilled in the destruction of Jerusalem in AD 70. Jesus returned as the Son of Man in judgment against Israel in these first-century events, but the final judgment of all people and the new heaven and new earth await his second coming.

The Resurrection and the Final Judgment

The bodily resurrection takes place at the time of Jesus’ return. Although many other religions and philosophies have assumed the immortality of the soul, whereby the nonmaterial part of human nature survives death, Christianity is distinctive in its strong commitment to the idea of a bodily resurrection. Death marks the separation of the body from the soul and the time when believers are immediately ushered into God’s presence (Eccles. 12:7). Thus, Jesus was able to promise the thief on the cross, “Today you will be with me in paradise” (Luke 23:43). However, people do not immediately receive new resurrection bodies at the time of death, but must wait until the time of Jesus’ return, when “the dead in Christ will rise first” (1 Thess. 4:16). This bodily resurrection is the precursor to the final judgment of the saved and the lost, when “all who are in their graves will hear his voice and come out—those who have done good will rise to live, and those who have done evil will rise to be condemned” (John 5:28–29). At that time, Christ “will judge the living and the dead” (2 Tim. 4:1).

This theme of judgment is foundational to Christianity, although Christians remain divided about the exact number and character of these judgments. Yet the time will come when all people will be judged, both “the living and the dead” (Acts 10:42), when “we will all stand before God’s judgment seat” (Rom. 14:10), and “each of us will give an account of ourselves to God” (14:12). God himself will be the judge, and Christ will be given a special place in presiding over the final judgment and separate those who truly belong to him from those who do not. Even though this judgment will be “according to what they have done” (Matt. 16:27; Rom. 2:6; Rev. 22:12), these deeds are simply an outward demonstration of whether a living faith is present, so there is no contradiction between justification by faith and the necessary place for a changed life in the believer. Yet, as Jesus warns, some will be surprised: “Not everyone who says to me, ‘Lord, Lord,’ will enter the kingdom of heaven, but only the one who does the will of my Father who is in heaven” (Matt. 7:21). God’s judgment will be both just and inescapable.

Christians remain divided about the number of resurrections. Premillennialists who are also pretribulationalists or midtribulationalists would conclude that there is a minimum of a resurrection of believers at the time of the rapture, when Jesus returns for his church; another resurrection when Jesus returns at the end of the tribulation for believers who came to faith and died during the tribulation; as well as another resurrection at the end of the millennium for “the rest of the dead” (Rev. 20:5). Premillennialists who are also posttribulationalists would conclude that there are as few as two resurrections: one at Jesus’ return and another at the end of the millennium. An amillennialist or a postmillennialist would assume that there may be only a single bodily resurrection when Jesus returns and establishes his kingdom.

There is one other aspect that completes this theme: God’s judgment also includes the destruction of the devil in the lake of fire (Rev. 20:10). Someday sin and evil will be forever removed from God’s creation.

The Millennium

The millennium is a thousand-year reign of Christ described most clearly in Rev. 20. Again, there are sharp differences of opinion regarding this topic.

Premillennialists believe that Jesus’ return will be “pre” (before) the millennium, and that this millennial kingdom will be a golden age of unprecedented glory and splendor. Dispensational premillennialists, with their emphasis on the distinction between Israel and the church, have focused on the fulfillment of all the remaining OT prophecies made to Israel. Historic premillennialists, on the other hand, lack this sharp distinction between Israel and the church and see themselves as being in continuity with the view of a future reign of Christ on earth found throughout church history. In recent years, premillennialism has become the leading view in American Christianity.

Postmillennialists believe that God will build his church for “a thousand years” and then Jesus will return “post” (after) this millennium. The millennium here is comparable to a silver age involving significant and unprecedented advances of the gospel throughout the world. Postmillennialists remain divided about how literal this thousand-year period might be and whether this period has already begun or not. Postmillennialism has had a significant following throughout most of church history but more recently has become a minority view.

Amillennialists believe in a different kind of millennium. Here there are two different varieties. Some believe that those reigning with Christ in Rev. 20 are simply believers living here in this present life experiencing the intimacy of Christ’s presence in their daily lives. Others see this period as involving departed believers, who are currently reigning with Christ in the intermediate state between death and his return. The millennium here is neither the golden age of the premillennialist nor the silver age of the postmillennialist; it is simply life today.

Again there are predisposing factors. Those who place more weight on potentially unfulfilled OT prophecies will tend to be premillennial, whereas those who place more weight on the words of Jesus and Paul will tend to be amillennial or possibly postmillennial. Those who see more of a distinction between Israel and the church will tend to be dispensational premillennialists, whereas those who emphasize the unity among God’s people throughout redemptive history will choose one of the other alternatives. Those who tend toward a more literal approach to interpreting Scripture will tend to be premillennialists, whereas those who give more weight to symbolic and figurative language will choose one of the other options. Those who tend to be more pessimistic about the future and believe that things are getting worse will tend to be premillennialists, whereas those who are more optimistic about what God is doing in this world and who emphasize the transforming power of the gospel will tend to be postmillennialists. One’s eschatological convictions are the logical outgrowth of many other earlier commitments and persuasions.

Each of these millennial views also has implications for a number of other topics: the nature and intensity of Satan’s binding in Rev. 20, the number of different resurrections, and the number of different judgments. The ultimate question, again, is which approach does the best job of putting together all the prophecies of Scripture and consequently is most faithful to God’s word.

Heaven and Hell

God’s judgment inevitably leads either to final and permanent torment in hell or to untold blessings in the new heaven and new earth (Matt. 25:46).

The ultimate hope of believers involves the bodily resurrection and a new earth to go along with these glorified bodies. The glad time will come when God “will wipe every tear from their eyes” and “there will be no more death or mourning or crying or pain” (Rev. 21:4). There will be the joys of physical bodies healed and restored, seeing friends and loved ones, but the greatest joy of all will be seeing the Lord himself in all his glory and majesty.

Hell will be the very opposite, experienced by those who deliberately rejected and avoided God during their earthly lives. They will find themselves rejected by God and cut off from his presence (and all the blessings that go along with his presence). Although there are various debates about how literal or figurative some of the biblical descriptions of hell are in terms of unquenchable fire and worms that do not die (Mark 9:48), it seems safe to say that hell will be the greatest of all possible tragedies and far worse than any of these descriptions suggest.

Annihilationism or conditional immortality, with its assumption that the souls of the lost will cease to exist at some point after death, represents an attempt to soften the explicit teachings of Scripture. Universalism—the belief that ultimately everyone will be saved—is another human strategy to avoid the clear teaching of Scripture. Ultimately, there is a heaven, and there is a hell, and human choices do make a difference for time and eternity.

The Benefits of Eschatology

Eschatology should give balance and perspective to life so that the affairs and accomplishments of this present life do not take on an inappropriate importance. Whenever people are caught up with materialism and a this-worldly perspective on life or become complacent about their lack of spiritual growth or the spiritual condition of others, the underlying cause is often a lack of attention to eschatology. Although many difficult and controversial questions surround the nature and timing of the return of Jesus Christ, Scripture is clear about the fact of his return and the final judgment. A new life with Christ that will last for all eternity is described in Scripture as the greatest of all possible blessings. At the same time, a life apart from God both in this life and in the life to come is described as the greatest possible tragedy in life. Perhaps even the spiritual deception and confusion around us, whereby many “will abandon the faith” (1 Tim. 4:1) and “not put up with sound doctrine” (2 Tim. 4:3), are a sign of the lateness of the hour. A proper appreciation of eschatology can be a means that God uses to change people’s lives.