clean: Num 19:18, Num 9:13, 2Co 5:21, Heb 7:26, Heb 9:13 lay them up: Num 19:17 a water of separation: That is, water prepared by being mixed with the ashes of the heifer, and set apart for the special purpose of being sprinkled on those who had contracted any legal defilement. To this rite the apostle Paul, in his epistle to the Hebrews. - Heb 9:13, Heb 9:14, pointedly alludes: "For if," says he, "the blood of bulls and of goats," alluding, probably, to the sin-offerings and the scape-goat, "and the ashes of a heifer sprinkling the unclean, sanctifieth to the purifying of the flesh; how much more shall the blood of Christ, who, through the eternal Spirit, offered himself without spot unto God, purge your conscience from dead works to serve the living God." Num 19:13, Num 19:20, Num 19:21, Num 6:12, Num 31:23, Num 31:24, Lev 15:20, Zec 13:1, 2Co 7:1 Reciprocal: Num 8:7 - water