What Does the Bible Say About When Is War Necessary?
Scripture recognizes that government carries the responsibility to use force against evil, and that there are times when war is part of God's ordering of a fallen world.
Scripture on When Is War Necessary
Exodus 14:13-14
Old Testament
"Moses answered the people, 'Do not be afraid. Stand firm and you will see the deliverance the Lord will bring you today. The Egyptians you see today you will never see again. The Lord will fight for you; you need only to be still.'"
Romans 13:1-4
New Testament
"Let everyone be subject to the governing authorities, for there is no authority except that which God has established. The authorities that exist have been established by God. Consequently, whoever rebels against the authority is rebelling against what God has instituted. For the one in authority is God's servant for your good. But if you do wrong, be afraid, for rulers do not bear the sword for no reason. They are God's servants, agents of wrath to bring punishment on the wrongdoer."
Ecclesiastes 3:8
Old Testament
"A time to love and a time to hate, a time for war and a time for peace."
1 Peter 2:13-14
New Testament
"Submit yourselves for the Lord's sake to every human authority: whether to the emperor as the supreme authority, or to governors, who are sent by him to punish those who do wrong and to commend those who do right."
Luke 3:14
New Testament
"Then some soldiers asked him, 'And what should we do?' He replied, 'Don't extort money and don't accuse people falsely—be content with your pay.' He did not tell them to stop being soldiers."
The Bottom Line
War is not sin itself, but a tool that legitimate authority uses to restrain evil—the question is always whether it's just, not whether it's possible.
Try Today
Read through Romans 13:1-7 carefully and pray for those in military or law enforcement authority, asking God to give them wisdom about when and how to exercise the power He's entrusted to them.
Prayer
Jesus told His disciples to ask the Father for what they need (John 16:23)—including wisdom about hard questions of justice and protection.
Father, You alone are the Judge of all the earth. You've given governments the power of the sword to restrain evil and protect the innocent. Give wisdom to those who must make decisions about war—clarity about when force is truly necessary to stop injustice, and restraint to use it only rightly. Help me see the complexity here, not with a hard heart but with a discerning one. And guard those who serve in harm's way. In Jesus' name, Amen.
📚 Read 1 Samuel 15 and Joshua 6-12 to see how God directed Israel's warfare, and then read Matthew 5:38-48 to understand how Jesus taught His followers to respond personally to enemies.
Explore any Bible topic instantly
Search what the Bible says about anything — free, fast, and faith-first.