Jude 1:3-4 - Jude's Purpose In Writing
3 Dear friends, although I have been eager to write to you about our common salvation, I now feel compelled instead to write to encourage you to contend earnestly for the faith that was once for all entrusted to the saints. 4 For certain men have secretly slipped in among you -- men who long ago were marked out for the condemnation I am about to describe -- ungodly men who have turned the grace of our God into a license for evil and who deny our only Master and Lord, Jesus Christ.