A Biblical Perspective on the Sanctity of Life
“You shall not murder.” — Exodus 20:13
This is one of those commandments that sounds simple—until you actually start thinking about it. Four words. That’s it. And yet those four words force you into some of the hardest questions you can possibly ask:
Are you allowed to take life in self-defense?
Is war ever justified?
What about the death penalty?
Is assisted suicide merciful or evil?
And how does this apply to the unborn?
You can’t just read “You shall not murder” and move on. If you take Scripture seriously, you have to ask: what does this actually mean in real life?
And underneath all of those questions is something even deeper: What does God think about life?
God Is a God of Life
If you miss this, you miss everything. God is not neutral about life. He is not indifferent to it. He is not casually interested in it. He is the author of it.
From the very beginning, God breathes life into man. He forms humanity in His image. He gives life, sustains life, and defines life. And when you follow His design, you see life flourish. When you walk away from His design, you see death creep in—slowly, then all at once. That’s not just physical death. It’s relational death. Cultural decay. Families breaking down. Societies unraveling.
There’s a reason Jesus says, “I came that they may have life and have it abundantly” (John 10:10). Life is God’s thing. The sixth commandment is not just about what you’re not allowed to do. It’s about what God loves.
Self-Defense: When Protecting Life Requires Force
Let’s start with the least controversial category: self-defense.
Is it ever permissible to take a life in order to protect life? Yes.
Not because life is cheap—but because life is sacred. Exodus 22:2 says that if someone breaks into your home and is struck so that he dies, there is no bloodguilt. That’s important. Because it tells you immediately that not all killing is classified as murder.
Nehemiah’s builders carried swords while they worked. The Jews in Esther were authorized to defend themselves. Psalm 82 says to rescue the weak and needy from the hand of the wicked. And even Jesus tells His disciples in Luke 22:36 to get a sword.
Why? Because there is a category where defending life is necessary.
Now, Jesus is absolutely opposed to vengeance. He’s opposed to using force to advance your own agenda or to settle personal scores. He told Peter: “Put your sword away.” But He is not opposed to protecting life.
So here’s the principle: You do not take life lightly—but you may take life to defend life.
That’s not murder. That’s protection.
Just War: When Nations Must Confront Evil
Now zoom out from the individual to the nation. War is awful. Nobody should want it. Nobody should celebrate it. War belongs to a fallen world—and it will not exist in heaven.
But here’s the reality: We don’t live in heaven yet.
We live in a world where evil is real. Where people invade, oppress, enslave, and destroy. And sometimes the only way to stop that evil is to fight.
If someone is about to carry out mass violence, you don’t say, “Well, violence is wrong, so we’ll just let this happen.” No—you stop them. Abraham went to war to rescue captives. David fought Goliath. God commanded Israel to engage in war multiple times. Ecclesiastes says there’s a time for war and a time for peace. And Romans 13 says God gives the state the sword.
So the question is not whether war can ever happen. The question is: “When is it righteous?”
Christians have wrestled with this for centuries, and what’s often called “just war theory” gives a helpful framework:
Is there a righteous cause?
Is it led by legitimate authority?
Are the motives pure?
Is it truly a last resort?
Is there a real chance of success?
And even then, how you fight matters. You don’t target civilians. You don’t use excessive force. You don’t annihilate for the sake of domination. You fight to restrain evil and restore peace.
That’s why Augustine said: “Peace should be the object of your desire. War should be waged only as a necessity.” Even in war, the goal is life.
The Death Penalty: Justice and the Sword
Now we step into something even more difficult. Does the Bible permit the death penalty?
Yes. Genesis 9:6 says: “Whoever sheds the blood of man, by man shall his blood be shed, for God made man in his own image.”
That’s striking. The reason given for capital punishment is not that life is cheap—it’s that life is so valuable that the unjust taking of it demands a severe response. But here’s where we have to be careful.
There’s a difference between what you are allowed to do and what the state is allowed to do. You are not allowed to take vengeance. You are called to mercy, forgiveness, and love of enemies. The state is different. Romans 13 says the state “does not bear the sword in vain.” It is God’s servant to restrain evil and carry out justice.
So capital punishment is not murder in that sense—it is an expression of justice when rightly administered. But that doesn’t make this simple.
There are real concerns about wrongful convictions. There are questions about how justice is applied. There are cases where mercy should be shown.
And there’s a real tension here: We want justice for victims, and we desire mercy for repentant sinners. Both are right instincts. And you see that tension even in the early church. Augustine could affirm the state’s right to punish—and still plead for mercy for some criminals. That’s the Christian heart.
Not soft on evil. Not eager for death. But deeply aware that justice and mercy must both be honored.
Assisted Suicide: When a Culture Turns Toward Death
Now we come to something that is rapidly gaining acceptance in our culture: assisted suicide. And we need to be very clear here. There is a difference between allowing death to come naturally and causing death.
If someone says, “I don’t want extraordinary measures to keep me alive artificially,” that’s one thing. But intentionally ending a life or unnaturally expediting death to relieve suffering is something else entirely.
Because it assumes something that Scripture rejects: That your life belongs to you. It doesn’t.
Psalm 139 says your days are written by God. 1 Corinthians 6 says you are not your own—you were bought with a price. Paul says in Philippians 1 that even when he desires to depart, he remains because God has not finished with him yet. Your life is not yours to end.
And once a culture accepts that it is, things begin to unravel quickly. At first, it’s terminal illness. Then it’s chronic pain. Then it’s mental suffering. Then it’s loneliness. Then it’s inconvenience. Where does it stop?
It doesn’t.
And that’s the danger. A society that begins to treat death as a solution will eventually start treating people as disposable.
The Christian answer is different: Life is always sacred—even when it is hard, painful, or unwanted. Especially then.
Abortion: The Unborn and the Sixth Commandment
Finally, we have to talk about abortion. Because if the sixth commandment is about protecting life, you cannot leave the unborn out of that conversation.
And the core question is this: What is in the womb? If it’s just tissue, then abortion is a medical procedure. If it’s human life, then it is something far more serious.
Science tells us that from the moment of conception, there is unique DNA—distinct from the mother. Development begins immediately. Heartbeat, brain activity, organs, limbs—it’s all there in process. But even beyond science, Scripture consistently treats the unborn as known by God, formed by God, and valued by God. And historically, Christians have always stood against abortion and infanticide—even in cultures where it was normal.
Why? Because they believed life belonged to God. And here’s where the logic matters:
If you say life only becomes valuable at independence, then newborns aren’t safe.
If you say it’s about development, then toddlers are on a spectrum.
If you say it’s about being wanted, then value becomes subjective.
None of those hold. Because life doesn’t get its value from us.
Life gets its value from God.
The Way of Life or the Way of Death
At the end of the day, all of these issues—self-defense, war, justice, assisted suicide, abortion—come down to one deeper question:
Will we honor life as God defines it, or will we redefine it ourselves?
That’s the same question humanity has been answering since the garden.
Will we trust God’s design—or take control?
The sixth commandment calls us back. Back to reverence. Back to humility. Back to recognizing that every human life—born or unborn, strong or weak, wanted or unwanted—bears the image of God. And ultimately, it points us to the cross.
Because every one of us has violated this commandment in some way—through anger, hatred, indifference, or harm. And yet Jesus takes death upon Himself… so that we might live.
Key Takeaways
God is a God of life, and the sixth commandment reflects His heart for human flourishing.
Self-defense is permitted when it protects life rather than seeks vengeance.
War is tragic but can be just when it restrains evil under strict moral conditions.
The state bears the sword to administer justice; individuals are called to mercy.
Assisted suicide reflects a dangerous belief that life belongs to us rather than God.
The unborn are fully within the moral scope of the sixth commandment.
Every issue ultimately comes down to whether we choose the way of life or the way of death.
Closing Prayer
Father,
You are the giver of life, and every breath we take comes from You. Forgive us for the ways we have failed to honor what You have made sacred.
Give us wisdom in hard issues. Give us courage to stand for truth. Give us compassion for those who suffer and conviction where our culture grows dark.
Teach us to love life as You love it—to defend the weak, to pursue justice, and to extend mercy as we have received mercy.
And remind us daily that our hope is not in ourselves, but in Jesus—the One who died so that we might truly live.
In His name,
Amen