Tafsiran Hakim-hakim 3:2: Rashi & Metzudat David

רַ֗ק לְמַ֙עַן֙ דַּ֚עַת דֹּר֣וֹת בְּנֵֽי־יִשְׂרָאֵ֔ל לְלַמְּדָ֖ם מִלְחָמָ֑ה רַ֥ק אֲשֶׁר־לְפָנִ֖ים לֹ֥א יְדָעֽוּם׃

hanya supaya angkatan-angkatan orang Israel mengetahuinya, yaitu dengan mengajari mereka berperang, sedangkan orang-orang sebelum mereka tidak mengenal peperangan itu;

Rashi

Only so that they should know. For this alone, He permitted these nations to remain, so that future generations of the Bnei Yisroel might grasp the consequence of iniquity—for it was now necessary for them to undergo martial training.
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Metzudat David

ONLY SO THAT THEY SHOULD KNOW: It wants to teach that only because of this they will become aware of the wonders of the miracles that were done for them since then
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Rashi

Whereas earlier when they stood worshiping Adonoy.
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Rashi

This was unknown. These wars and the art of battle. It was unnecessary.
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