The book of Jude is a General Epistle (Apostolic Letter). The author is Jude the brother of James, both of who are half-brothers of Jesus Christ. Jude wrote it circa 75 A.D. The purpose of this book is to address false teachings and to illustrate a contrast between the error of heresy and the truth of Jesus Christ. Jude consists of only one chapter.Those who place their faith and trust in Jesus Christ are secure in salvation, not by their own good deeds, because no one is good enough to do that, but believers are secure by the vicarious work of Jesus Christ on the Cross. It is only by, "Him who is able to keep you from stumbling, and to make you stand in the presence of His glory blameless with great joy, to the only God our Savior, through Jesus Christ our Lord, be glory, majesty, dominion and authority, before all time and now and forever. Amen." (vs. 24-25).