What does the Bible say about warnings in Jude?

In Jude, the author presents three significant warnings exemplified through the history of Israel, the fall of angels, and the destruction of Sodom and Gomorrah. These warnings emphasize the seriousness of unbelief and the dire consequences that follow for those who turn away from the truth. The examples serve as reminders for the faithful to contend for the faith and remain steadfast in their belief, acknowledging the constant temptation from false teachers and the need to uphold God's Word in a world filled with corruption and decay.