Deuteronomy 18:5 in the King James Version
For the LORD thy God hath chosen him out of all thy tribes, to stand to minister in the name of the LORD, him and his sons for ever.
Context
4 You shall give him the first fruits of your grain, of your new wine, and of your oil, and the first of the fleece of your sheep.
5 For the LORD your God has chosen him out of all your tribes to stand to minister in the LORD’s name, him and his sons forever.
6 If a Levite comes from any of your gates out of all Israel where he lives, and comes with all the desire of his soul to the place which the LORD shall choose,