Read the book of Jude.
Jesus has atoned for our sins. Nothing can separate us from God’s love and we are fully and finally forgiven. So why not sin and live it up?
Some people think we should. They might not put it that directly, but they encourage us not to worry about giving in to our sin nature or striving for holiness. Like a player in Monopoly who draws the “get out of jail free” card, we have a permanent fire escape from hell and it can’t be lost or voided. So, some say, don’t worry about how you live because it will turn out fine in the end.
Jude taught us in this chapter/book that those who teach this way are “ungodly people, who pervert the grace of our God into a license for immorality and deny Jesus Christ our only Sovereign and Lord.” In what way do they “deny Jesus Christ?” They deny that he is “our only Sovereign and Lord.” In other words, they discount that he is king and, as his redeemed citizens, we live under his rules and are accountable for our lives.
Fortunately, Christ’s “rules” come with a new nature that desires holiness, the Holy Spirit that stimulates holiness within us, and a community of others to help us grow. This is why Jesus said that his “yoke is easy” and his “burden is light” (Matt 11:30). But if we fall under the false influence of ungodly teachers, we can do much damage to ourselves and others by living in ungodly ways.
Our defense against this corruption of the gospel is to “keep yourselves in God’s love” (v. 21a). How do you that? “By building yourselves up in your most holy faith and praying in the Holy Spirit.” It is so important to cultivate spiritual growth by daily learning the word, obeying what it says, and praying.
You’ve made it this far in our trek through the New Testament. I hope it has helped you grow stronger in your faith. But keep going “as you wait for the mercy of our Lord Jesus Christ to bring you to eternal life” (v. 21b)–a reference to the return of Christ.