הִנֵּה֙ בִּֽהְיוֹת֣וֹ תָמִ֔ים לֹ֥א יֵֽעָשֶׂ֖ה לִמְלָאכָ֑ה אַ֣ף כִּי־אֵ֤שׁ אֲכָלַ֙תְהוּ֙ וַיֵּחָ֔ר וְנַעֲשָׂ֥ה ע֖וֹד לִמְלָאכָֽה׃ (ס)
Lihatlah, ketika kayu itu masih utuh saja, kayu itu tidak dapat dibuat menjadi suatu barang. Apalagi setelah api memakannya dan kayu itu hangus, mana mungkin kayu itu masih dapat dibuat menjadi suatu barang?
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.?”