Verse-by-Verse Commentary
The Book of Deuteronomy
Chapter 20: The LORD Goes With You to Battle
These are Israel's laws of war, but they read like a lesson in faith. Facing horses and chariots and armies larger than their own, Israel was told not to fear, because the LORD Himself went with them to fight for them. Before the battle, the priest steadied the troops, and the officers sent home any man whose heart was elsewhere or afraid, lest his fear spread. And when Israel came against a city, they were first to offer it peace. It is a chapter about courage that rests on God's presence, the danger of a divided heart, and a God who offers peace before He wages war.
About This Commentary
This is a verse-by-verse study of Deuteronomy chapter 20. For each section you will find the KJV text, the Hebrew words that sharpen the meaning, plain explanation, and a Gospel Focus. The chapter gives Israel courage for battle because the LORD goes with them, sends home the fearful and distracted, and commands that peace be offered to a city before war. Every Scripture quotation is from the King James Version.
Setting the Stage
Be Not Afraid
Facing greater armies, Israel was not to fear, for the LORD went with them to fight for them.
He Goes With You
The battle's outcome rested not on Israel's numbers but on the God who went into it with them.
The Fearful Sent Home
Any man distracted or afraid was released, lest his fear spread through the ranks.
Proclaim Peace First
Before laying siege to a city, Israel was to offer it terms of peace.
The LORD Goes With You (Deuteronomy 20:1-4)
Facing armies greater than their own, Israel was not to be afraid, for the LORD who brought them out of Egypt went with them into battle to fight for them.
He That Goeth With You to Fight for You
"When thou goest out to battle against thine enemies, and seest horses, and chariots, and a people more than thou, be not afraid of them: for the LORD thy God is with thee, which brought thee up out of the land of Egypt. And it shall be, when ye are come nigh unto the battle, that the priest shall approach and speak unto the people, And shall say unto them, Hear, O Israel, ye approach this day unto battle against your enemies: let not your hearts faint, fear not, and do not tremble, neither be ye terrified because of them; For the LORD your God is he that goeth with you, to fight for you against your enemies, to save you. And the officers shall speak unto the people, saying, What man is there that hath built a new house, and hath not dedicated it? let him go and return to his house, lest he die in the battle, and another man dedicate it. And what man is he that hath planted a vineyard, and hath not yet eaten of it? let him also go and return unto his house, lest he die in the battle, and another man eat of it. And what man is there that hath betrothed a wife, and hath not taken her? let him go and return unto his house, lest he die in the battle, and another man take her."
Hebrew Study
"to save," yasha (יָשַׁע). To deliver, to rescue, to bring to safety. It is the root behind the names Joshua and Jesus, "the LORD saves." The victory in battle was not finally a feat of arms but an act of salvation: God going with His people to deliver them. Their part was to trust; the saving was His.
Explanation
Before Israel ever drew a sword, a priest was to address the army and calm their fears: "When thou goest out to battle against thine enemies, and seest horses, and chariots, and a people more than thou, be not afraid of them: for the LORD thy God is with thee." The command was not to count the enemy's strength but to remember God's presence. The reason was simple and sweeping: "the LORD your God is he that goeth with you, to fight for you against your enemies, to save you." The battle would be won not by superior numbers or weapons, which Israel often lacked, but by the God who marched with them.
Gospel Focus
The heart of Israel's courage was not in themselves but in God's presence: "the LORD your God is he that goeth with you." Faith does not measure the battle by the size of the enemy but by the greatness of the God who fights for us. Jehoshaphat heard the same word centuries later: "Be not afraid nor dismayed by reason of this great multitude; for the battle is not yours, but God's" (2 Chronicles 20:15). The believer's real warfare is spiritual, "we wrestle not against flesh and blood," but the promise holds: the God who goes with us fights for us and saves. Notice too that word "to save," from the root of Jesus' own name. The One who once went before Israel's armies has come as our Saviour, and He is with us still, for He said, "lo, I am with you alway." When you face what looks bigger than you can handle, do not take the measure of the trouble; take the measure of your God, and remember He goes with you.
The Fearful Sent Home (Deuteronomy 20:5-9)
Before battle, the officers released any man whose heart was tied to unfinished business at home or gripped by fear, lest that fear spread through the army.
The Fearful and Fainthearted
"And the officers shall speak further unto the people, and they shall say, What man is there that is fearful and fainthearted? let him go and return unto his house, lest his brethren's heart faint as well as his heart. And it shall be, when the officers have made an end of speaking unto the people, that they shall make captains of the armies to lead the people."
Hebrew Study
Before battle, whole classes of men are sent home — the one with a new house, vineyard, or bride — and then the fearful: "What man is there that is fearful and fainthearted? let him go... lest his brethren's heart faint." God does not win by numbers or by the merely conscripted; fear is contagious, and He would rather have a smaller, willing army than a large, trembling one. It is the principle later dramatized when Gideon's thousands were pared to three hundred: the battle is the LORD's.
Explanation
God did not want an army of half-hearted men. The officers were to send home any man who had just built a new house, planted a vineyard, or become engaged to be married, lest he die in battle before enjoying these things and, more to the point, lest his mind be on home rather than the fight. Then came the searching question: "What man is there that is fearful and fainthearted? let him go and return unto his house." The reason was practical: fear is contagious. One trembling soldier could melt the courage of those beside him, "lest his brethren's heart faint as well as his heart." Better a small band of whole-hearted men than a crowd whose hearts were divided or afraid.
Gospel Focus
God has always sought whole-hearted followers rather than large but divided crowds. He would later trim Gideon's army from thousands to three hundred so the victory would clearly be His. The principle carries into the life of faith: a heart tied to unfinished business at home, or gripped by fear, is not ready for the Lord's battles. Jesus said it plainly: "No man, having put his hand to the plough, and looking back, is fit for the kingdom of God" (Luke 9:62). He is not looking for a great number of half-committed people but for those who will follow Him wholly. And notice the warning about contagious fear. Our courage or our timidity affects those around us; faith strengthens the brethren, and fear can weaken them. So we are called both to guard our own hearts against fear and to build up the courage of those beside us. Give the Lord not a divided, backward-looking heart, but your whole self, and be one who steadies his brethren rather than one who makes their hearts faint.
Proclaim Peace First (Deuteronomy 20:10-20)
Before making war against a city, Israel was to offer it peace, and even in war they were to spare the fruitful trees, for God set limits even on the conduct of battle.
Proclaim Peace Unto It
"When thou comest nigh unto a city to fight against it, then proclaim peace unto it. And it shall be, if it make thee answer of peace, and open unto thee, then it shall be, that all the people that is found therein shall be tributaries unto thee, and they shall serve thee. And if it will make no peace with thee, but will make war against thee, then thou shalt besiege it: And when the LORD thy God hath delivered it into thine hands, thou shalt smite every male thereof with the edge of the sword: But the women, and the little ones, and the cattle, and all that is in the city, even all the spoil thereof, shalt thou take unto thyself; and thou shalt eat the spoil of thine enemies, which the LORD thy God hath given thee. Thus shalt thou do unto all the cities which are very far off from thee, which are not of the cities of these nations. But of the cities of these people, which the LORD thy God doth give thee for an inheritance, thou shalt save alive nothing that breatheth: But thou shalt utterly destroy them; namely, the Hittites, and the Amorites, the Canaanites, and the Perizzites, the Hivites, and the Jebusites; as the LORD thy God hath commanded thee: That they teach you not to do after all their abominations, which they have done unto their gods; so should ye sin against the LORD your God. When thou shalt besiege a city a long time, in making war against it to take it, thou shalt not destroy the trees thereof by forcing an axe against them: for thou mayest eat of them, and thou shalt not cut them down (for the tree of the field is man's life) to employ them in the siege: Only the trees which thou knowest that they be not trees for meat, thou shalt destroy and cut them down; and thou shalt build bulwarks against the city that maketh war with thee, until it be subdued."
Hebrew Study
Even war is bounded by mercy. A city must first be offered "peace," and when besieging it, "thou shalt not destroy the trees... for the tree of the field is man's life." The fruit trees that would feed generations were not to be wasted in the fury of war. Restraint, proportion, and care for what gives life mark God's rules of battle — a striking dignity that sets Israel's warfare apart from the total devastation of the surrounding nations.
Explanation
Even in warfare, God set boundaries of mercy. Against distant cities, Israel was not to attack without first offering terms: "When thou comest nigh unto a city to fight against it, then proclaim peace unto it." Only if the offer was refused was the city besieged. (The Canaanite nations within the land itself were under a separate, specific judgment for their entrenched wickedness.) And even a besieged city's orchards were to be spared: "thou shalt not destroy the trees thereof by forcing an axe against them... for the tree of the field is man's life." Israel was not to wage the total, scorched-earth war of the nations, but to fight under restraint, sparing what gave life.
Gospel Focus
That God commanded peace to be offered before war reveals something of His own heart, for He is not eager to destroy but to spare. This is the pattern of His dealing with us. Before judgment falls, God proclaims peace; the gospel itself is an offer of peace to those who were His enemies. "Being justified by faith, we have peace with God through our Lord Jesus Christ" (Romans 5:1), and God is even now "beseeching" the world through His messengers, "be ye reconciled to God." Judgment is real, but it is never God's first word; peace is offered first, and only its refusal brings war. There is also mercy in the sparing of the trees, a restraint that would not destroy for the sake of destroying. God's people are to reflect that same character, not delighting in ruin, but seeking peace and sparing life wherever they can. Take the offer of peace while it stands, and let the God who proclaims peace before judgment shape how you treat even those against you.
Chapter 20 in Review
Deuteronomy 20 gives Israel's laws of war, and they are shot through with faith and mercy. Facing greater armies, Israel was not to fear, "for the LORD your God is he that goeth with you, to fight for you... to save you." Before battle, the distracted and the fearful were sent home, lest a divided or trembling heart weaken the whole army. And when Israel came against a city, they were first to "proclaim peace unto it," and even in war to spare the fruitful trees.
For the Apostolic reader, the chapter teaches courage, wholeheartedness, and the gospel of peace. Our confidence rests not in ourselves but in the God who goes with us and saves; our real battles are spiritual, but the promise holds. God seeks whole-hearted followers, not divided, backward-looking ones, and Jesus said the one who looks back is not fit for the kingdom. And the command to offer peace before war mirrors the very heart of God, who proclaims peace to His enemies in the gospel before judgment ever falls. Fight your battles trusting the God who goes with you, give Him your whole heart, and receive the peace He offers in Christ.
- Do not fear a greater enemy; "the LORD your God is he that goeth with you... to save you" (20:4).
- The battle is the Lord's, and our real warfare is spiritual (2 Chronicles 20:15; Ephesians 6:12).
- God seeks whole-hearted followers; the fearful and distracted were sent home (20:8; Luke 9:62).
- Fear is contagious; guard your heart and strengthen your brethren (20:8).
- God offers peace before war, as the gospel offers peace to His enemies (20:10; Romans 5:1).
Questions for Reflection
- Do you measure your battles by the size of the trouble, or by the God who goes with you?
- Is your heart whole toward the Lord, or divided and looking back?
- Have you received the peace God offers in Christ before the day of judgment?
References & Sources
Scripture is quoted from the King James Version (KJV). The Hebrew terms are standard and can be checked in any Hebrew lexicon. Supporting passages are listed so every claim can be verified in its own setting. If anything here does not look right, a verse, a reference, or a wording, please tell us at info@FruitBearers.net. Thank you for helping us keep Bible Learning error free.
- The LORD goes with His people to save them: Deuteronomy 20:1-4; 2 Chronicles 20:15.
- Whole-hearted followers, not divided ones: Deuteronomy 20:5-9; Luke 9:62.
- Peace offered before war, as in the gospel: Deuteronomy 20:10-20; Romans 5:1.