The subject of Jude's epistle is of major concern to the Christian church in every era. From the beginning of the world there have always been men who corrupt the Lord's revelation and claim His promises for themselves on terms other than faith and repentance communicated to them supernaturally by God himself. These men thus turn the grace of God into wantonness and deny the Christ. The Christian church in every age is thus confronted not merely with external battle with the world, but also with doctrinal strife internally. Within the teaching ministry of the church there are heretics whose doctrines must be exposed and refuted.