2. _Kābas._ The radical meaning of this verb is, to tread, to trample. The participle from it is used to designate the craft of the fuller, who fulled his goods by treading them with the feet. Hence its use to signify the thorough cleansing and whitening of clothing and stuffs. The word occurs in the Old Testament forty-six times, with this uniform meaning. It is used whenever the ritual washing of clothes is spoken of. From it a very striking figure is derived, which appears twice, to indicate the most thorough self-cleansing, under the idea of a garment scoured, with “nitre and much soap” (Jer. ii, 22; iv, 14), and twice, to indicate a like thorough cleansing wrought by the Holy Spirit. “_Wash_ me thoroughly from mine iniquity, and cleanse me from my sin.... Purge me with hyssop, and I shall be clean: _wash_ me, and I shall be whiter than snow” (Psa. li, 2, 7), white, as a garment is made by the fuller’s art. (Mark ix, 3.) These passages indicate the essential idea of the word. It is expressive of a scouring, or washing, which searches the very texture of the fabric. It is, however, worthy of notice that in the Targum of Onkelos, on Numbers xix, 19, it is rendered, “to sprinkle.” “The clean person shall sprinkle upon the unclean, on the third day and on the seventh day; and on the seventh day he shall be clean; and he _shall sprinkle_ his raiment, and wash with water, and at even he shall be clean.“ This rendering is very noteworthy, as it indicates the manner in which the law was understood on this point. In fact, as we have already seen, sprinkling signified the most thorough cleansing.