Numbers 19

The ritual for achieving ceremonial purification from contact with a dead body is detailed here. This involves the unique sacrifice of a spotless red heifer that is completely burned outside the camp. The ashes of the heifer are mixed with water, creating the Water of Purification. Anyone who touches a dead body must be cleansed with this water on the third and seventh days. This ordinance was crucial for maintaining the holiness of the camp during the long period of death and burial in the wilderness.