Numbers 5:17

Overview - Numbers 5
The unclean are removed out of camp.
Restitution is to be made in trespass.
11 The trial of jealousy.
Treasury of Scripture Knowledge

Numbers 5:17  (King James Version)
And the priest shall take holy water in an earthen vessel; and of the dust that is in the floor of the tabernacle the priest shall take, and put it into the water:

holy water
That is, water from the laver; called holy, because separated from common to sacred uses. This is the most ancient account of the trial by ordeal, which obtained so generally among various nations; and it was calculated to fortify the minds of the Israelitish women in the hour of temptation, and to render them watchful against all occasions of exciting suspicion in the breasts of their husbands.
19:2-9 Exodus 30:18

of the dust
Job 2:12 ; Jeremiah 17:13 ; Lamentations 3:29 ; John 8:6 John 8:8