申命記 20:3

שמע ישראל [AND HE SHALL SAY UNTO THEM] HEAR O ISRAEL — Even though you have no other merit than the fulfilment of the command of “Reading the Shema” you would deserve that He should help you (Sotah 42a). על איבכם [YE APPROACH THIS DAY UNTO WAR] AGAINST YOUR ENEMIES — By these apparently redundant words the priest says, as it were: Remember that these are not your brethren, and if you will fall into their hands they will have no pity on you; — it is not like the war of Judah against Israel of which it states, (II Chronicles 28:15) “And the men which were expressed by name rose up, and took the captives, and with the spoil clothed all that were naked among them, and arrayed them, and shod them, and gave them to eat and to drink, and anointed them, and carried all the feeble of them upon asses, and brought them to Jericho, the city of the palm trees, to their brethren: they returned to Samaria” — it is your enemies against whom you march, therefore show yourselves strong for the battle (Sifrei Devarim 192:2; Sotah 42a). אל ירך לבבכם אל תיראו ואל תחפזו ואל תערצו LET NOT YOUR HEARTS FAINT; FEAR NOT, AND HURRY NOT PRECIPITATELY, NEITHER BE TERRIFIED BECAUSE OF THEM — These are four admonitions corresponding to four things which the kings of the nations do in battle: they bring their shields close together in order to strike them one against the other and thereby make a loud noise so that their opponents should flee precipitately; they trample the ground heavily with their horses — and make them neigh — in order to make a noise through the beating of their horses’ hoofs; they themselves shout aloud and blow trumpets and other noisy instruments. אל ירך לבבכם LET NOT YOUR HEARTS FAINT — through the neighing of the horses, אל תיראו FEAR NOT from the noise made by the clashing of the shields, ואל תחפזו AND HURRY NOT PRECIPITATELY at the sounds of the trumpets, ואל תערצו NEITHER BE TERRIFIED by the noise of the shouting (Sifrei Devarim 192:3; Sotah 42).

וְאָמַ֤ר אֲלֵהֶם֙ שְׁמַ֣ע יִשְׂרָאֵ֔ל אַתֶּ֨ם קְרֵבִ֥ים הַיּ֛וֹם לַמִּלְחָמָ֖ה עַל־אֹיְבֵיכֶ֑ם אַל־יֵרַ֣ךְ לְבַבְכֶ֗ם אַל־תִּֽירְא֧וּ וְאַֽל־תַּחְפְּז֛וּ וְאַל־תַּֽעַרְצ֖וּ מִפְּנֵיהֶֽם׃

Hear, O Yisra᾽el, you draw near today to do battle against your enemies: let not your hearts faint, fear not, and do not tremble, nor be terrified because of them;