Deuteronomy 21:1-3 New American Bible, Revised Edition (NABRE)

1. If the corpse of someone who has been slain is found lying in the open, in the land the Lord, your God, is giving you to possess, and it is not known who killed the person,

2. your elders and judges shall go out and measure the distances to the cities that are in the neighborhood of the corpse.

3. When it is established which city is nearest the corpse, the elders of that city shall take a heifer that has never been put to work or worn a yoke;

Deuteronomy 21