The Book of Jude Part 5 - The Marks of a Spiritual Counterfeit
Jude knew the real thing. He was the real thing. He could spot a spiritual counterfeit in a church fifty pews away! He is telling us in verses 12 and 13 how to spot counterfeit Christians; apostates who may look like Christians on the outside, but are definitely not Christian on the inside.
Jude 12 & 13