The Duty of the Levites

After David said, the Lord has given peace to his people and he dwells in Jerusalem forever. And so the Levites no longer need to carry the tabernacle or any of the things for its service. But their duty shall be to assist the sons of Aaron for the service of the house of the Lord. Do not fret because of the wicked, be not envious of wrongdoers, for they will soon fade like the grass, and wither like the green herb. Psalm 37, Exhortation to Patience and Trust, a psalm of David.