Deuteronomy 18:3-9

“Now this shall be the priests’ portion from the people, from those offering a sacrifice, either an ox or a sheep: they shall give to the priest the shoulder and the two cheeks and the stomach. You shall also give him the first fruits of your grain, your new wine [the first of the season], and your [olive] oil, and the first sheared fleece of your sheep. For the LORD your God has chosen him, him and his sons from all your tribes, to stand and serve in the name of the LORD forever. “Now if a Levite comes from any of your cities throughout Israel where he resides, and comes whenever he wishes to [the sanctuary] the place which the LORD chooses; then he shall serve in the name of the LORD his God, like all his fellow Levites who stand there before the LORD. They shall have equal portions to eat, except what they receive from the sale of their fathers’ estates. [Jer 32:6-15] “When you enter the land which the LORD your God is giving you, you shall not learn to imitate the detestable (repulsive) practices of those nations.