Eschatology
From Neoredemptive
Theology of "last things" -- what happens at the "end of the world", when will it happen, etc.
Postmillennialism, Amillennialism, Premillennialism, Dispensationalism.
The Eschatological Kingdom
Over-Realized and Under-Realized Eschatology
Even a healthy, Biblically robust eschatology can be warped and turned into something harmful through the errors of under-realization and over-realization.
An over-realized eschatology errs too much on the "already" side of "already-and-not-yet", believing (for example) that we have access to perfect knowledge of God, a sinless life, immediate on-demand healing, or the pragmatic imminent return of Jesus (by "pragmatic imminence" we mean "sell your stuff and head for a hilltop, quick!").
An under-realized eschatology errs too much on the "not-yet" side of "already-and-not-yet", believing that there will be no more healings or miracles untill the parousia, that our efforts on behalf of the gospel cannot succeed, or that besetting sin must simply be tolerated.
As with Jesus' High Priestly Prayer, we are called to live not within a simple monopole, but rather within a dynamic tension between two seeming opposites, holding to both undiluted; if ever we lose sight of that tension, and if ever it becomes too easy for us to answer questions about what exactly is "already" and what exactly is "not yet", we are probably in a very dangerous (heterodox) position.

