דברים יח-כב: בונים חברת מופת

The priests the Levites, even all the tribe of Levi, shall have no portion nor inheritance with Israel; they shall eat the offerings of the LORD made by fire, and His inheritance. And they shall have no inheritance among their brethren; the LORD is their inheritance, as He hath spoken unto them. And this shall be the priests’due from the people, from them that offer a sacrifice, whether it be ox or sheep, that they shall give unto the priest the shoulder, and the two cheeks, and the maw. The first-fruits of thy corn, of thy wine, and of thine oil, and the first of the fleece of thy sheep, shalt thou give him. For the LORD thy God hath chosen him out of all thy tribes, to stand to minister in the name of the LORD, him and his sons for ever. And if a Levite come from any of thy gates out of all Israel, where he sojourneth, and come with all the desire of his soul unto the place which the LORD shall choose; then he shall minister in the name of the LORD his God, as all his brethren the Levites do, who stand there before the LORD. They shall have like portions to eat, beside that which is his due according to the fathers’houses. . When thou art come into the land which the LORD thy God giveth thee, thou shalt not learn to do after the abominations of those nations. There shall not be found among you any one that maketh his son or his daughter to pass through the fire, one that useth divination, a soothsayer, or an enchanter, or a sorcerer, or a charmer, or one that consulteth a ghost or a familiar spirit, or a necromancer. For whosoever doeth these things is an abomination unto the LORD; and because of these abominations the LORD thy God is driving them out from before thee. Thou shalt be whole-hearted with the LORD thy God. For these nations, that thou art to dispossess, hearken unto soothsayers, and unto diviners; but as for thee, the LORD thy God hath not suffered thee so to do. A prophet will the LORD thy God raise up unto thee, from the midst of thee, of thy brethren, like unto me; unto him ye shall hearken;

And it shall be, when ye draw nigh unto the battle, that the priest shall approach and speak unto the people, and shall say unto them: ‘Hear, O Israel, ye draw nigh this day unto battle against your enemies; let not your heart faint; fear not, nor be alarmed, neither be ye affrighted at 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 there that hath planted a vineyard, and hath not used the fruit thereof? let him go and return unto his house, lest he die in the battle, and another man use the fruit thereof. 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.’ And the officers shall speak further unto the people, and they shall say: ‘What man is there that is fearful and faint-hearted? let him go and return unto his house, lest his brethren’s heart melt as his heart.’

If a man have a stubborn and rebellious son, that will not hearken to the voice of his father, or the voice of his mother, and though they chasten him, will not hearken unto them; then shall his father and his mother lay hold on him, and bring him out unto the elders of his city, and unto the gate of his place;

When thou goest forth to battle against thine enemies, and seest horses, and chariots, and a people more than thou, thou shalt not be afraid of them; for the LORD thy God is with thee, who brought thee up out of the land of Egypt.

"What man is there who is fearful and is faint-hearted" (Deut. 20:8)? Exactly so. This is one whose heart has no strength to withstand the strains of war⁶⁸He is afraid he’ll be killed in battle due to his sins.. Now, once one becomes entangled with the perplexities of war, he should trust the Hope of Israel, and He will save him in times of trouble. He should know he is doing battle for the unity of the Name. He should place his life in His Hands and neither be afraid nor alarmed. He should not think about his wife or his children. Rather, he should wipe away thoughts of them from his heart, and clear himself of everything for the war. Anyone who thinks about or contemplates (matters) during the battle and frightens himself violates a Negative Commandment, as it says, “do not be faint of heart, nor be alarmed, do not flee, and be not frightened before them” (Deut. 20:3). And not only that, but all the blood of Israel hangs around his neck. If he did not win and did not fight the battle with all his heart and soul, he is like one who spills everyone’s blood, as it says, “lest he not melt his brothers’ hearts as has his” (Deut. 20:8). It is explicitly stated in the Tradition that, “Cursed be he who does the work of G-d sluggishly, and cursed be he who keeps back his sword from blood” (Jeremiah 48:10). However, anyone who does fight with all his heart without fear, and his intentions are only to Sanctify the Name, is promised that he will not be harmed and nothing bad will happen to him. He will build an upright home in Israel, and he and his children will earn merit forever, and merit The World To Come, as it says, “certainly, G-d shall make for my master a faithful house, for the wars of G-d does my master fight and no evil will be found with you all your days…And the soul of my master will be bound with the living, with the Lord your G-d…” (I Samuel 25:28-29).