הִנֵּה֙ בִּֽהְיוֹת֣וֹ תָמִ֔ים לֹ֥א יֵֽעָשֶׂ֖ה לִמְלָאכָ֑ה אַ֣ף כִּי־אֵ֤שׁ אֲכָלַ֙תְהוּ֙ וַיֵּחָ֔ר וְנַעֲשָׂ֥ה ע֖וֹד לִמְלָאכָֽה׃ (ס)
그것이 온전할 때에도 아무 제조에 합당치 않았거든 하물며 불에 살라지고 탄 후에 어찌 제조에 합당하겠느냐
Rashi
How much more Heb. אֲף כִּי, an expression of an a fortiori and ‘how much more so.’ It is the same throughout Scripture, like (I Sam. 23:3): “Behold we are afraid here in Judah; how much more so (אֲף כִּי) if we go to Keilah...?” Likewise, in this chapter (15:5): “Behold when it was whole, it could not be used for work; how much less (אֲף כִּי) when fire has consumed it, etc.?”