Jude wants his readers to defend the faith. Therefore, his letter is designed to be an apologetic for apologists. Jude is writing to those in the church who are facing the attacks of the Devil. He is appealing that they would “contend earnestly for the faith.” He makes the argument why every Christian should be well versed in apologetics. There are people within the church who are abandoning the faith, reinventing the faith, and using the faith for their own desires. Specifically, he is speaking of those who are like this and stay in the church and become defiling influences within the church. He identifies them as “[S]pots in your love feasts” (Jude 1:12).