The priests were inscribed in their family records according to their ancestral houses, as were the Levites twenty years of age and over according to their various offices and divisions.
but the Levites shall camp around the tabernacle of the covenant to ensure that God’s wrath will not fall upon the Israelite community. The Levites shall keep guard over the tabernacle of the covenant.
Who ever serves as a soldier at his own expense? Who plants a vineyard without eating its produce? Or who shepherds a flock without using some of the milk from the flock?