For there are certain men crept in privily, even they who were of old written of beforehand unto this condemnation, ungodly men, turning the grace of our God into lasciviousness, and denying our only Master and Lord, Jesus Christ (Jude 1:4).
Jude does not mince words when describing the problem: people who have infiltrated the church yet who do not truly serve God. They turn grace into lasciviousness and thus deny Jesus. The temptation always exists to compromise the Gospel with the loose standards of the world. Let us avoid doing so lest we perish in the same error!