Jude, the brother of James, writes a warning about some who are subversive, teaching doctrines out of their own minds and causing divisions. He advises the believers to build themselves up.

1. some crept into the church teaching that grace amounts to shamelessly allowing the desires of the fleshly nature rule over us--reminder of God's righteous judgment against this--speaking evil of the authority that God has set in place--grumblers, complainers, those who walk in their own desires, big talkers, sensual people, mockers--build yourself up in the faith and keep working to show compassion and save some of them out of the fire