The Epistle of Jude, attributed to Jude, the brother of James, confronts false teachers who distort the truth and lead believers astray. Jude warns of their immoral conduct and encourages believers to contend for the faith once for all delivered to the saints. He draws examples from Old Testament narratives and references extra-biblical sources to illustrate the consequences of unbelief and false teachings. Jude calls believers to build themselves up in the faith, to show mercy to those in doubt, and to remain steadfast in the truth of God's Word.