Department of War

War and Peace: How Should Christians Think About Conflict?

Every few months, some headline reminds us that the world is far from peaceful. Recently, talk has swirled about whether our nation should rename the Department of Defense the Department of War. Without diving into politics, it raises an interesting point: how do we, as Christians, think about war in 2025?

It’s not an abstract question. We watch daily updates about Russia and Ukraine. We hear about conflicts in the Middle East. Even though many of us live far away, war affects food prices, travel, global stability, and most of all—human lives. So how should a follower of Jesus respond when war seems to be part of our reality?

Augustine and the Idea of “Just War”

One of the earliest and most influential Christian thinkers to wrestle with this was Augustine of Hippo (354–430 AD). Living in a world where the Roman Empire was crumbling, Augustine asked: When, if ever, is war justified for Christians?

He argued that while Christians should always prefer peace, there may be times when war is sadly necessary. Augustine laid out principles that became known as “just war theory.” Some of these principles included:

• Just Cause – War should only be fought to correct a grave evil, such as defending innocent life.

• Legitimate Authority – Only proper governments can declare war, not individuals.

• Right Intention – The goal must be peace, not conquest or revenge.

• Proportionality – The good expected from war should outweigh the harm caused.

• Last Resort – Every effort for peace should be exhausted before war begins.

These ideas influenced later Christian thought, from Thomas Aquinas to modern-day ethics discussions.

The Tension for Believers

The challenge for us is that Jesus also said things like, “Blessed are the peacemakers, for they shall be called sons of God” (Matthew 5:9). He told us to love our enemies and turn the other cheek. For many Christians, this has led to a pacifist position—believing any participation in war contradicts the way of Christ.

Others, following Augustine, argue that living in a fallen world sometimes requires governments (and by extension, citizens) to defend against evil. In their view, refusing to confront aggression can allow even greater suffering.

This tension isn’t easy to resolve. Both sides want to be faithful to Jesus.

How Should We Respond Today?

So where does that leave American Christians in 2025? I’d suggest a few guiding principles:

2. Pray for Peace Constantly
   Scripture calls us to pray “for kings and all who are in high positions, that we may lead a peaceful and quiet life” (1 Timothy 2:2). Prayer isn’t passive—it’s an act of faith, asking God to restrain evil and guide leaders toward wise decisions.

4. Remember the Value of Every Life
   It’s easy to think of war in terms of maps and strategies, but God sees individuals. Every soldier, every civilian, every refugee is made in His image. When we keep that in mind, our conversations about conflict become more compassionate and less abstract.

6. Stay Anchored in Hope
   Jesus warned that there would be “wars and rumors of wars” (Matthew 24:6). Yet He also reminded us not to be alarmed—history is in God’s hands. While wars may rage, His kingdom is unshakable. That gives us a perspective no news cycle can steal.

8. Support Relief and Reconciliation
   Even if we aren’t in government or the military, we can still act. Supporting ministries that provide humanitarian aid, welcoming refugees, or simply being a voice for reconciliation in our communities reflects God’s heart for peace.

10. Examine Our Own Hearts
    War starts with human pride, greed, and hatred. James wrote, “What causes wars and what causes fights among you? Is it not this, that your passions are at war within you?” (James 4:1). While we may not control global events, we can choose to root out anger, bitterness, and selfish ambition in our own lives. Peace begins in the heart.

The Bigger Picture

In the end, Augustine was right about one thing: Christians long for peace, but we live in a broken world. Sometimes governments may resort to war. As believers, our calling is not to cheer for conflict but to reflect Christ in how we respond.

That means:

• We pray for leaders to act with wisdom and restraint.

• We mourn every loss of life, regardless of nationality.

• We point people to the Prince of Peace, who alone can end all wars.

And we cling to the promise that one day, Isaiah’s vision will come true: “They shall beat their swords into plowshares, and their spears into pruning hooks; nation shall not lift up sword against nation, neither shall they learn war anymore” (Isaiah 2:4).

Until then, let’s live as peacemakers. Whether in our families, churches, or communities, we can model the way of Jesus—even in a world that often seems addicted to conflict.

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