Most Western Christians have unconsciously adopted a peacetime mentality. Life is relatively comfortable. The threats feel distant. The urgency seems optional.
So we settle. We manage and maintain.
And in doing so, we miss something massive — both the reality of the war we’re already in, and the extraordinary life available to those who engage it.
When a Passenger Ship Became a Troopship
The Queen Mary launched in 1936 as a luxury ocean liner, ferrying passengers between Southampton and New York in elegant comfort. When World War II broke out, everything changed. The ship was converted into a troop transport, carrying up to 15,740 Allied soldiers per crossing, zigzagging across the Atlantic to evade German U-boats.
Same ship. Completely different mission. Completely different mentality.
That conversion is a picture of what happens when a Christ-follower wakes up to Kingdom reality. John Piper, in his Desiring God podcast “Is Wartime Living the Same as Minimalism?”, gives six compelling reasons why followers of Jesus should embrace a wartime lifestyle. Each one connects directly to the Kingdom-now life we’re called to inhabit.
This isn’t about grim, joyless striving. Piper is clear: wartime living is for the glory of God, the good of mankind, and our maximum joy. Let’s unpack why.
1. We Are Called to Subdue Things
The wartime mentality begins at the very beginning. God didn’t place Adam and Eve in the garden to lounge. He placed them there with a mandate.
“God blessed them; and God said to them, ‘Be fruitful and multiply, and fill the earth, and subdue it; and rule …'” (Genesis 1:26, 28 NASB).
Subdue. Rule. These are active, forward-moving words. The original human calling was not passive. It was purposeful dominion under God’s authority.
When you’re born again, that Edenic blueprint is restored in you. The new creation life in Christ reconnects you to your original design as an image-bearer with real authority and real responsibility. You’re not here to drift. You’re here to cultivate — to release Kingdom potential into every domain God has entrusted to you. Work. Family. Community. Creativity.
A peacetime mentality produces managers. A wartime mentality produces Kingdom builders.
2. A War Is Already On — Whether We Acknowledge It or Not
You were born into a war zone. The rebellion of Lucifer and the fall of mankind didn’t just produce personal sin. It created a cosmic conflict between God’s creative purposes and the enemy’s agenda of destruction.
The born-again experience doesn’t remove you from that conflict. It heightens your participation in it.
“For our struggle is not against flesh and blood, but against the rulers, against the powers, against the world forces of this darkness, against the spiritual forces of wickedness in the heavenly places” (Ephesians 6:11-12 NASB).
The wartime lifestyle isn’t a posture we choose to adopt. It’s a reality we choose to acknowledge. The only question is whether we engage it with intention or sleepwalk through it, wondering why things feel harder than they should.
King Jesus is actively reigning from the Father’s right hand right now (Psalm 110:1). His enemies are being subdued. His Kingdom is advancing. He’s doing it through His people. Waking up to that reality changes how you carry yourself through the day.
See It Will Cost You If You Lose Your Fierceness!
3. Creation Is Both a Gift and a Danger
Piper makes a point that’s easy to miss. The things God created as goods can become dangers when they crowd out the Kingdom.
Jesus illustrated this vividly in the Parable of the Soils. The Word of the Kingdom gets choked — not just by thorns of sin, but by “the cares and riches and pleasures of this life” (Luke 8:14 NASB). Good things. Normal things. Things that aren’t evil in themselves.
A peacetime mentality treats comfort and accumulation as the goal. A wartime mentality holds all of it loosely, grateful for good things but not enslaved to them. You steward what God gives rather than being steered by it.
This is the discipline of margin. Living lean. Staying agile. Not because asceticism is the point, but because a soldier burdened with excess baggage can’t move freely when the moment demands it.
4. Self-Denial Declares That Christ Is Worth Everything
Kingdom life includes real self-denial. Jesus was unambiguous.
“If anyone wishes to come after Me, he must deny himself, and take up his cross daily and follow Me” (Luke 9:23 NASB).
This isn’t punitive. It’s the proof. When you deny yourself for the sake of the Kingdom, you’re declaring with your life that Christ is supremely valuable … more than comfort, more than approval, more than accumulation.
And here’s the Kingdom dimension Piper highlights: those who demonstrate that Christ is their supreme treasure are those who can be trusted with real authority. “Whoever loses his life for My sake, he is the one who will save it” (Luke 9:24 NASB). The path to ruling and reigning with Christ runs straight through self-denial. No alternate route exists.
5. Wartime Living Frees You to Be Significant
The wartime lifestyle isn’t about going without. It’s about reallocation.
Strip away what doesn’t matter — the excess entertainment, the accumulation for its own sake, the energy spent maintaining a comfortable status quo — and you discover margin. Capacity. Freedom to invest your time, treasure, and talent in things that carry eternal weight.
You become lean. Agile. Responsive to what God is actually doing rather than perpetually occupied managing a life built for peacetime.
This is what it looks like to “reign in life through the One, Jesus Christ” (Romans 5:17 NASB). Not gripping tightly to comfort, but moving freely under His authority toward His purposes. Significance isn’t found in what you accumulate. It’s found in what you’re trusted to do.
6. A Wartime Lifestyle Produces Maximum Joy — Now
Here’s the unexpected payoff: the wartime lifestyle isn’t a sacrifice of joy. It’s the path to it.
“The kingdom of heaven is like a treasure hidden in the field, which a man found and hid again; and from joy over it he goes and sells all that he has and buys that field” (Matthew 13:44 NASB).
The man doesn’t sell everything reluctantly. He sells from joy. The treasure is so real, so worth everything, that the selling feels like gain.
Piper’s point lands hard here. It’s more blessed and genuinely satisfying to advance the cause of Christ than to entertain yourself into a fog. The wartime lifestyle wakes you up. It gives your days weight and direction. It puts you in alignment with the Zeal of the Lord, God’s fierce determination to see good established on earth flowing through surrendered lives.
That’s not grim. That’s the most alive you’ll ever feel.
Soldier Up
The Queen Mary didn’t become less of a ship when she was converted to a troopship. She became more fully what she was built for, carrying something that mattered toward something that counted.
That’s the invitation in front of you.
The peacetime mentality will always be available. Comfortable. Low-cost. Unchallenging.
You were born again for more than peacetime. King Jesus is reigning now, subduing enemies now, advancing His Kingdom now, through people who’ve chosen the wartime life.
Soldier up, friend. The campaign is already underway.
Q4U: Where has a peacetime mentality quietly taken hold in your life — in your priorities, your prayer life, your use of time and money? What would it look like to reallocate one area this week toward the wartime lifestyle you were designed for?