Turn with me back to the book of Jude. I want you to focus with me on verses 3 and 4—because that’s where the purpose of Jude’s message really becomes personal and urgent. I need you to see something here: Jude didn’t originally plan to write what he wrote. He wanted to talk about our shared salvation, the joy we have in Christ. But something changed. Something demanded his attention—and mine too. The Spirit moved him to sound a warning.

Jude said, “I found it necessary to write to you, exhorting you to contend earnestly for the faith which was once for all delivered to the saints.” Why? Because certain men had crept in unnoticed—ungodly men who twisted the grace of God into lewdness and denied the authority of Jesus Christ Himself.

And I’m telling you right now, this warning isn’t just for Jude’s day—it’s for ours. If those things were happening back then—when the church was still young, still guided by the apostles—how much more should I expect the same dangers today, two thousand years removed from those early teachings? That’s why I can’t stay silent. That’s why I’m calling you to contend earnestly for the faith.

Now, when Jude speaks of “the faith,” he doesn’t mean just general belief—he’s talking about the body of doctrine revealed by God. And when he says it was “once for all” delivered, he means one time—for all time. That revelation is complete. There is no new truth coming. God has already told us everything we need.

Paul confirmed that in Acts 20:27 when he told the Ephesian elders, “I have not shunned to declare to you the whole counsel of God.” Peter said in 2 Peter 1:3 that God has given us all things that pertain to life and godliness. And in 2 Timothy 3:16–17, Paul told Timothy that the Scriptures are inspired and make the man of God complete, fully equipped for every good work.

So, let me ask you: If we’ve been given the full truth… what are we doing with it?

See, some today still act like God’s revelation is incomplete—like we need more. Some think they can twist grace into a license to sin. Jude called that out directly. Those men in his day were teaching that grace gives permission for lewdness. That’s not grace—that’s perversion. And people are doing it still—excusing sinful lifestyles under the guise of love or tolerance. But grace, true grace, doesn’t excuse sin—it teaches us to deny it.

Paul said in Titus 2:11–12, “The grace of God that brings salvation has appeared to all men, teaching us to deny ungodliness and worldly lusts and to live soberly, righteously, and godly.” That’s grace—grace that teaches, not grace that tolerates.

Let me be direct: Some are denying the Lordship of Jesus altogether. Jude had to deal with that. People denying the authority of Christ—and it’s happening today. Whether it’s rejecting Scripture, redefining morality, or elevating human authority over God’s Word, the result is the same: it’s rebellion. But Jesus said in Matthew 28:18, “All authority has been given to Me in heaven and on earth.” That’s not up for debate. And when He sends someone with His Word, as He said in John 13:20, to receive that messenger is to receive Him.

So yes, I must contend earnestly for the faith. And yes, so must you.

But how do we do it?

The phrase “contend earnestly” doesn’t mean pick fights or stir up drama. It comes from a Greek term used in athletic contests and military battles—it means to struggle vigorously. And Jude uses it in the present tense, which means this fight is continuous. It doesn’t stop. Not until the Lord returns.

Paul described this spiritual war in 2 Corinthians 10. Our weapons aren’t carnal—we don’t fight with fists or politics—but they are mighty in God. They pull down strongholds. They bring every thought captive to the obedience of Christ.

And in Ephesians 6, Paul tells us how to fight: we put on the whole armor of God. The belt of truth. The breastplate of righteousness. The shield of faith. The helmet of salvation. The sword of the Spirit. And don’t forget prayer—prayer is your spiritual air support. You need every piece of that armor because we’re in a war with spiritual wickedness.

But here’s something I see all too often—people pick up the sword but forget the rest of the armor. They rush to correct others but haven’t guarded their own heart. That’s why Jesus said in Matthew 7:3–5 to take the plank out of your own eye before helping your brother. If you want to stand strong in this battle, start by standing firm in your own obedience.

And while we contend for the faith, don’t forget the spirit in which we do it. Paul says in Galatians 6:1 to restore others in a spirit of gentleness. Meekness. Patience. Correct with humility. Because the goal isn’t to win arguments—it’s to win souls.

So, I’ll leave you with this: the call to contend for the faith is a call to spiritual courage. Not just to believe the truth, but to defend it. Not just to avoid error, but to stand against it.

Let me ask you—whose side of this battle are you on?

Have you submitted to Christ? Have you made Him your Lord? Are you continuing steadfastly in the apostles’ doctrine?

If not, then this is your call. Hear the gospel. Believe. Repent. Confess Christ as Lord. Be baptized for the remission of sins. And then live faithfully—because eternal life is for those who endure to the end.

And maybe you’ve already taken those steps, but somewhere along the way, you’ve stopped contending. Maybe you’ve compromised, maybe you’ve stayed silent when you should have spoken up, or maybe you’ve let sin slip in unnoticed—just like those men Jude warned us about.

The good news is—there’s still time to make it right.