Numbers 35:1-5

Then GOD spoke to Moses on the Plains of Moab at Jordan-Jericho: “Command the People of Israel to give the Levites as their part of the total inheritance towns to live in. Make sure there is plenty of pasture around the towns. Then they will be well taken care of with towns to live in and pastures for their cattle, flocks, and other livestock. “The pasture surrounding the Levites’ towns is to extend 1,500 feet in each direction from the city wall. The outside borders of the pasture are to measure three thousand feet on each of the four sides—east, south, west, and north—with the town at the center. Each city will be supplied with pasture.