Out of their inheritance, means that the Levites were to be settled in the midst of their brethren, their office of ministering before the Lord, made it necessary that every tribe should be near the Levites. Sweet type this of the presence of Jesus in the midst of his people. It was the promise of the Old Testament, that God would dwell in the midst of his people. Zechariah 2:10. And Jesus, who is the promise itself in the new, assured his people of his being always with them, even to the end of the world. Matthew 28:20.
Related Commentaries of Joshua 21:3
Joshua 21:3
3 And the children of Israel gave unto the Levites out of their inheritance, at the commandment of the LORD, these cities and their suburbs.