1. Remember what you were taught (17-19)

The appearance of ungodly false teachers in the church should not surprise believers. The apostles who gave us Jesus' words warned us about scoffers in the last days. We just need to remember their words so we can be spiritually prepared, and not be discouraged or tempted to follow ungodly ways.

2. Keep building yourselves up (20-25)

In an ungodly world, we should keep building ourselves up through prayer, and remain in God's love, patiently waiting on Jesus' mercy. Jude also teaches the wisdom of how to live as a shepherd for people with different spiritual conditions: being merciful to some, urgently rescuing some, and staying away from others. Jude ends by blessing all believers with the confidence that God is able to keep them from stumbling and lead them to God's glorious presence.