Deuteronomy 18:6

18:6 Suppose a Levite comes by his own free will from one of your villages, from any part of Israel where he is living, to the place the Lord chooses

Deuteronomy 33:21

33:21 He has selected the best part for himself,

for the portion of the ruler is set aside there;

he came with the leaders of the people,

he obeyed the righteous laws of the Lord

and his ordinances with Israel.