Eschatology

"From first to lat, and not merely in the epilogue, Christianity is eschatology, is hope, forward looking and forward moving, and therefore also revolutionizing and transforming the present. 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.... Hence eschatology cannot really be only a part of Christian doctrine. Rather, the eschatological outlook is characteristic of all Christian proclamation, and of every Christian existence and of the whole Church."

Jurgen Moltmann Quoted by Anthony A. Hoekema, The Bible and The Future, Pg. 3