Jude, brother of James, writes to those who are called, who are loved in God the Father and kept for Jesus Christ: offers the following greeting, "Mercy, peace and love be your's in abundance."
Jude wanted to focus his writing on salvation, but instead he writes to Christians urging them to hold fast to the truth. Certain men, who deny Jesus Christ have infiltrated into the church and are causing division by their false teaching. These arrogant men have turned Christian freedom into license.
Jude reminds his audience about Jewish history and tradition - Lord, having saved the people from Egypt, afterwards destroyed those who did not believe; Angels who did not keep their proper domain were kept in everlasting chains for the judgment of the great day; Sodom and Gomorrah suffered the vengeance of eternal fire. Likewise, these dreamers defile the flesh, reject authority, and speak evil of dignitaries.
Michael the archangel is an example of someone who does not speak evil of others: when disputing with the devil about the body of Moses, Michael did not dare to bring a reviling accusation against the devil, but instead said, "The Lord rebuke you!"
Ungodly men speak evil of what they do not know. They have gone in the way of Cain, Balaam and Korah. These men are spots at love feasts, complain and flatter.
Quoting the words of Jesus Christ himself, Jude explains about these mockers who cause division.
Jude 1:17-19 But, dear friends, remember what the apostles of our Lord Jesus Christ foretold. They said to you, “In the last times there will be scoffers who will follow their own ungodly desires.”These are the people who divide you, who follow mere natural instincts and do not have the Spirit.Look for the mercy of our Lord Jesus Christ. Have compassion on some, and save others with fear, pulling them out of the fire, hating even the garment defiled by the flesh.
In conclusion, Jude writes that God is able to keep you from stumbling and keep us faultless and with great joy.
Jude signs off by saying, "To the only God our Savior be glory, majesty, power and authority, through Jesus Christ our Lord, before all ages, now and forevermore! Amen."