But who may abide the day of his coming? and who shall stand when he appeareth? for he is like a refiner's fire, and like fullers' soap: But who may abide the day of his coming? - Only they who shall believe on his name; for they that will not, shall be blinded, and the unbelieving nations shall be destroyed by the Romans.
Like fuller's soap - כברית keborith, from ברר barar, to cleanse, any thing that deterges. Kali, or fern ashes, or such things. I doubt whether the composition which we call soap, was known in ancient times.