5 And if the avenger of blood pursues him, they shall not give up the slayer into his hand; because he killed his neighbor unwittingly, having had no enmity against him in times past.

Matthew Henry's Commentary on Joshua 20:5

Commentary on Joshua 20:1-6

(Read Joshua 20:1-6)

When the Israelites were settled in their promised inheritance, they were reminded to set apart the cities of refuge, whose use and typical meaning have been explained, Hebrews 6:18.