17 And the priest shall take holy water in an earthen vessel; and of the dust that is on the floor of the tabernacle the priest shall take, and put it into the water;
Numbers 5:17 Cross References - Leeser
Exodus 30:18
18 Thou shalt also make a laver of copper, with its foot of copper, to wash withal: and thou shalt set it between the tabernacle of the congregation and the altar, and thou shalt put therein water.
Numbers 19:2-9
2 This is the statute of the law which the Lord hath commanded, saying, Speak unto the children of Israel, that they bring unto thee a completely red cow, on which there is no blemish, upon which no yoke hath ever come.
3 And ye shall give her unto Elazar the priest, and he shall lead her forth to without the camp, and some one shall slay her before his face:
4 And Elazar the priest shall take some of her blood with his finger; and he shall sprinkle in the direction of the front of the tabernacle of the congregation of her blood seven times.
5 And some one shall burn the cow before his eyes; her skin, and her flesh, and her blood, with her dung, shall he burn.
6 And the priest shall take cedar-wood, and hyssop, and a scarlet string, and cast it into the midst of the burning of the cow.
7 And the priest shall wash his clothes, and he shall bathe his flesh in water, and afterward may he come into the camp; and the priest shall be unclean until the evening.
8 And he that burneth her shall wash his clothes in water, and bathe his flesh in water; and he shall be unclean until the evening.
9 And a man that is clean shall gather up the ashes of the cow, and lay them up without the camp in a clean place; and it shall be kept for the congregation of the children of Israel for a water of sprinkling: it is a purification-offering.
Job 2:12
12 And when they lifted up their eyes afar off, and they recognised him not, they lifted up their voice, and wept; and they rent every one his robe, and strewed dust upon their heads toward heaven.
Jeremiah 17:13
13 Hope of Israel, O Lord, all that forsake thee shall be made ashamed, and the backsliders among me shall be written down on the earth; because they have forsaken the fountain of living waters, the Lord.
Lamentations 3:29
29 That he put his mouth in the dust; perhaps there still is hope;