Numbers 19:1-3

New International Version - UK

The water of cleansing

19 The Lord said to Moses and Aaron: ² ‘This is a requirement of the law that the Lord has commanded: tell the Israelites to bring you a red heifer without defect or blemish and that has never been under a yoke. ³ Give it to Eleazar the priest; it is to be taken outside the camp and slaughtered in his presence.