Christianity is eschatology, is hope, forward looking and forward moving. . . . The eschatological is not one element of Christianity, but it is the medium of the Christian faith as such, the key in which everything in it is set.
All that is to say that what Don Garlington has written here is probably the best synopsis of New Testament theology (i.e., eschatology) I've read yet. Even if you don't care about his discussion of Revelation 20:1-6 and the "millenium," the first two sections on eschatology and biblical interpretation are well worth reading.