Summary
Numbers 19 sets forth the law concerning a red heifer that must be without blemish and never yoked. Eleazar the priest slays the animal, takes its blood, and uses cedar, hyssop, and scarlet to burn it entirely, including dung. The ashes of the burnt heifer are collected in a clean place and used with water to create a “water of separation” for purification. Anyone who becomes unclean—by touching a dead body, a bone, or an open vessel—must observe a seven‑day purification period, sprinkling the water on the third and seventh days and then cleansing themselves. Failure to perform the prescribed rituals results in exclusion from Israel, underscoring the seriousness of maintaining holiness.