Having established that his readers were in great danger from false teachers, in verses 8-11 of his letter, Jude added to his previous three illustrations from the Old Testament by referring to three more – using the examples of Cain, Korah and Balaam. All of these Old Testament men are known for their misdeeds, rather than their righteous acts or faith. Cain was a murderer, Korah led a rebellion and Balaam sought money to lead Israel astray. By referring to these men, Jude sought to make plain the character of false teachers who not only twist Scripture but whose lives are also reflect that they do not know the Lord or follow His ways. God’s people are urged to be on guard and fight for the truth – especially that of the gospel.