While some NT letters can be encouraging and uplifting, other letters contain harsh criticism or reproof by the writer. Even though it was Jude’s original intention to write about the joint salvation that he and all God’s people share, he felt he needed to turn his attention and exhort his readers “to contend for the faith that was delivered to the holy ones once for all” (v. 3).
We can all probably think of a time in our life when we needed to be told what to do or why we should be doing something. That is essentially what Jude is doing here. He offers examples from people in the past whose ungodliness or rebellion were deserving of punishment, and then he also warns of present people among his readers who “nurture only themselves without fear” that are also deserving of God’s judgment. He reassures them that there is nothing unusual happening among them, and that even the Lord Jesus Christ predicted through the apostles that “in the end time there will be scoffers walking according to their own ungodly desires” (v. 18).
False teachers abound in the world, and just as there were people in the past who opposed God and followed their own ungodly desires, there will always continue to be such people who work against the purposes of God. Given this fact, Jude exhorts his readers to “build yourselves up in your most holy faith and pray in the holy spirit,” and as they do this, they are to keep themselves in the love of God (vv. 20-21).
This is the way that Jude encourages us to “contend for the faith.” We must continue to build ourselves up and become strong in the faith and to pray in the holy spirit so that we are not shaken by people who create divisions or who utter arrogant words and flattering speech for their own advantage. By being confident in our faith we will be strong in the Lord without doubting, ready to “save others by snatching them from the fire” (v. 23).
The world is a dark place and evil seems to be rampant, and it will continue to be that way until the day that we stand in the presence of our God, blameless and with great joy. Until then, we must fight the good fight and be on guard for those who want to “turn the grace of our God” (v. 4) into unrighteousness and immoral behavior.