Pope Leo XIV Is Wrong: The Bible Still Affirms Just War and 1,600 Years of Christian Tradition Agree

Did Pope Leo XIV Just Abandon 1,600 Years of Christian Just War Teaching?

Pope Leo XIV used his first Palm Sunday homily on March 29, 2026, to deliver a forceful rejection of war, declaring that "Jesus does not listen to the prayers of those who wage war." The statement has ignited fierce debate among Christians over whether the Pope has effectively gutted 1,600 years of established just war doctrine.

Ryan Helfenbein, writing for The Christian Post, argues that the Pope's rhetoric represents a radical departure from Scripture and centuries of church teaching. He points to Exodus 22, which affirms the right to self defense, and describes God Himself as a "man of war." The Sixth Commandment, Helfenbein contends, forbids murder, not all forms of killing.

The just war tradition traces back to Saint Augustine of Hippo in the 4th century and was later formalized by Thomas Aquinas, who established three criteria for a morally justified war: legitimate authority, just cause, and right intention. The Southern Baptist Convention reaffirmed this tradition as recently as 2024.

Just war is not a Christian's compromise with evil; it is a Christian's duty and refusal to let evil go unpunished.

Helfenbein cited the Battle of Tours in 732, where Charles Martel turned back Islamic expansion into Europe, and the Siege of Vienna in 1683 as examples of justified defensive warfare. He devoted extended discussion to World War II, arguing it was a necessary stand against Nazi tyranny that could not have been stopped by pacifism alone.

The Pope's comments came as the U.S. and Israeli war with Iran enters its second month and Russia's campaign in Ukraine continues. Secretary of War Pete Hegseth had recently invoked the name of Jesus Christ, calling on Americans to pray for victory and for troops to inflict "overwhelming violence of action" against the enemy.

Romans 13 and 1 Peter 2 are also cited in the article as biblical support for government authority to wield the sword against evil. While Pope Leo has not formally revoked official Catholic teaching on just war, critics say his homily effectively undermined it in the court of public opinion.

Pope Leo XIV Challenges Centuries of Biblical Just War Doctrine Amid Iran Conflict

The debate highlights a deepening rift between Catholic and Protestant perspectives on the morality of armed conflict. While the Pope frames his message as faithfulness to Christ's call to peace, many evangelical and Protestant leaders see it as a dangerous abandonment of the biblical mandate to defend the innocent and punish evildoers.

The Catholic Catechism still formally recognizes just war principles, but with a sitting pope rhetorically dismantling the tradition from St. Peter's Square, the practical effect may be just as significant as any doctrinal change.

The Crusader's Opinion

Let me be blunt: pacifism in the face of evil is not holiness. It is cowardice dressed up in vestments. When Nazis marched across Europe, it was not prayers alone that stopped them. It was men with rifles who believed that defending the innocent was a sacred duty. When Islamic armies stood at the gates of Vienna, it was Christian soldiers who pushed them back. The Bible does not stutter on this. God commanded Israel to defend itself. Romans 13 says the governing authority "does not bear the sword in vain." Pope Leo may want a world without war, and so do we all. But wishing it does not make it so. Evil does not negotiate. Evil does not respect your pacifism. And while the Pope tells soldiers God does not hear their prayers, Iran is building weapons that could wipe entire nations off the map. The Christian tradition has always understood that sometimes love requires a sword.

Take Action

• Read the full Christian Post article and share it with your church community to spark discussion on just war doctrine: Read Here
• Study what Scripture actually says about self defense and just war. Start with Romans 13, 1 Peter 2, and Exodus 22. Lead a Bible study on these passages.
• Support persecuted Christians around the world who are under direct threat of violence through The Shepherd's Shield
• Support Open Doors USA, which serves persecuted Christians in over 70 countries: www.opendoorsusa.org
• Contact your elected representatives and urge them to stand firm in defense of allies facing existential threats. Call the U.S. Capitol Switchboard at (202) 224 3121.
• Pray for wisdom and discernment for Christian leaders navigating the tension between the call to peace and the duty to protect the innocent.