'Cities of Refuge' in the Bible

"All the cities that you will give the Levites will be six cities of refuge, to which the killer can flee; in addition to them you will give forty-two cities.

you will select for yourselves cities for your cities of refuge, that a killer who has killed a person unintentionally can flee there.

The cities that you are to give will be your six cities of refuge.

You will give three cities across the Jordan and three cities in the land of Canaan; they will be cities of refuge.