Self-Preservation Is Not Neutral
Post #5 in fear in combat
“What battles have in common is the human: the behavior of men struggling to reconcile their instinct of self-preservation, their sense of honor and the achievement of some aim over which other men are ready to kill them. The study of battle is therefore always a study of fear and usually of courage, usually also of faith and sometimes vision.” —Sir Herbert Butterfield, Man On His Past
― quoted by Dave Grossman, On Combat: The Psychology and Physiology of Deadly Conflict in War and in Peace
One of the quiet assumptions we bring to Scripture is that the instinct to preserve ourselves is morally innocent. It feels natural. It feels necessary. It feels obvious.
Deuteronomy does not share that assumption.
This is one of the places where Scripture collides most directly with our instincts. The problem is not that self-preservation exists. The problem is that self-preservation so easily becomes supreme. And when it does, Scripture calls it sin.
Fear and the Desire to Live
The fear Deuteronomy confronts most often is not abstract anxiety. It is fear of death. Fear of harm. Fear of loss. Fear of what obedience might cost. Fear related to combat.
Israel is about to enter a land where people will try to kill them. If you think about the distinct disadvantages, they are the invading force, no established supply lines, and their skill in battle is not quite fully tested. They are about to hit hardened defensive structures without siege equipment; they have every disadvantage.
Moses knows the instinct that will rise in their hearts. Preserve your life. Protect yourself. Avoid risk. Choose safety. Yet Moses repeatedly commands them not to fear.
Why?
Because fear directed toward self-preservation will always compete with obedience to God. And when the two collide, self-preservation will win unless fear has already been ordered toward the LORD.
Self-Preservation and Disobedience
Israel’s history proves the point.
The previous generation stood at the edge of the land and decided that survival mattered more than obedience. Their reasoning was not irrational. The enemies were real, larger than life even. The danger was real. Death was a genuine possibility. But fear of death outweighed fear of God, and disobedience followed immediately.
Deuteronomy is Moses’ attempt to ensure that this does not happen again. Covenantal instructions to maintain order and discipline in the face of enemy opposition.
That is why fear is confronted so relentlessly. Fear directed toward self-preservation does not merely affect emotions. It determines actions. It reshapes values. It reorders allegiance.
Why Fear Is Removed from the Ranks
We keep coming back to this, Deuteronomy 20 removes the fearful man from battle. The fearful man is not merely scared. He has already decided what he values most. His fear has settled on preserving his life rather than trusting God. It would be better for him to not be part of the army than to weigh those around him down.
That fear will not remain private. It will spread. It will melt hearts. It will erode obedience before the first blow is struck. Moses understands that an army governed by self-preservation will not follow God when obedience becomes costly.
He that is fit to be a martyr, is the fittest man to be a soldier; he that is regenerate, and hath laid up his treasure and his hopes in heaven, and so hath overcome the fears of death, may be bold as a lion, and ready for anything, and fearless in the greatest perils. —Richard Baxter. A Christian Directory, Part 4
Scripture Never Absolutizes Survival
One of the most important things Deuteronomy teaches us is that Scripture never treats survival as the highest good.
Life is a gift. But it is not ultimate.
Fear becomes sinful when it seeks to preserve what God has not promised to protect at all costs. When fear settles on safety rather than faithfulness, it has already crossed the line from prudence into idolatry. This is why Scripture can command people into danger without apology. It is also why Scripture never excuses fear simply because death is possible. But this is not just an Old Testament issue.
The Thread Continues into the New Testament
Jesus does not soften this logic,
“And do not fear those who kill the body but cannot kill the soul. Rather fear him who can destroy both soul and body in hell.” (Matthew 10:28, ESV)
That is not a call to recklessness. It is a call to rightly ordered fear. Fear that terminates on God frees a person from being ruled by the instinct to survive.
Peter also ties it in to obedient living,
“But even if you should suffer for righteousness’ sake, you will be blessed. Have no fear of them, nor be troubled,” (1 Peter 3:14, ESV)
The instinct to preserve life is powerful. Scripture does not deny that. It denies its authority. The covenant people of God must have a greater fear!
Why This Is Hard for Us
This teaching upsets us because we live in a culture that treats self-preservation as self-evidently good. We are trained to prioritize safety, comfort, and longevity. Fear that protects those things is often praised as wisdom.
Deuteronomy refuses that framework.
It insists that obedience may cost us what we are most afraid to lose. And it insists that fear must still be governed by worship, not instinct.
The Question Deuteronomy Forces
The question is not whether you will value your life.
The question is whether you will value it more than God.
Fear will answer that question long before words do.
The next post will address one of the most common objections at this point: What about bodily fear? What about reactions that seem automatic? Deuteronomy’s answer may be more demanding than we expect.