וּמִ֤י מְכַלְכֵּל֙ אֶת־י֣וֹם בּוֹא֔וֹ וּמִ֥י הָעֹמֵ֖ד בְּהֵרָֽאוֹת֑וֹ כִּֽי־הוּא֙ כְּאֵ֣שׁ מְצָרֵ֔ף וּכְבֹרִ֖ית מְכַבְּסִֽים׃
但他來的日子，誰能承受得住？他顯現的時候，誰能站立得住？因為那日如同煉銀之人的火，又如漂布之人的鹼。
Rashi
and like fullers’ soap Like soap used by the fullers, which removes the entire stain. So will he remove all the wickedness. and like soap It is an herb which removes stains, erbe savonijere in Old French, probably soapwort. The word בֹּרִית signifies a thing that cleans and purifies, as in (Ps. 73:1), “to the pure of heart.”