וְכִֽי־תָבֹ֨אוּ מִלְחָמָ֜ה בְּאַרְצְכֶ֗ם עַל־הַצַּר֙ הַצֹּרֵ֣ר אֶתְכֶ֔ם וַהֲרֵעֹתֶ֖ם בַּחֲצֹצְר֑וֹת וֲנִזְכַּרְתֶּ֗ם לִפְנֵי֙ יְהוָ֣ה אֱלֹֽהֵיכֶ֔ם וְנוֹשַׁעְתֶּ֖ם מֵאֹיְבֵיכֶֽם׃
Quand donc vous marcherez en bataille, dans votre pays, contre l’ennemi qui vous attaque, vous sonnerez des trompettes avec fanfare; vous vous recommanderez ainsi au souvenir de l’Éternel votre Dieu, et vous recevrez assistance contre vos ennemis.
Agra DeKala
And when you enter into battle in your land (Numbers 10:9) – it is lacking a [letter] lamed (which would make it, “to your land,” since that is the expected preposition here]: Since, truly, how is it possible that there would be war in our land? For behold, God, may He be blessed, has promised that even a peaceful sword shall not cross into our land (Ta’anit 22a). However, this would be [the case] if they, God forbid, stopped studying Torah. And that is the hint of the lacking lamed, since there will be war in your land if you are lacking the study [limud] of Torah. But if you have Torah study amongst you, there is no Satan and no evil occurrence.