Numbers 18:25-32

25The Lord also told Moses,

26“Give these instructions to the Levites: When you receive from the people of Israel the tithes I have assigned as your allotment, give a tenth of the tithes you receive—a tithe of the tithe—to the Lord as a sacred offering.

27The Lord will consider this offering to be your harvest offering, as though it were the first grain from your own threshing floor or wine from your own winepress.

28You must present one-tenth of the tithe received from the Israelites as a sacred offering to the Lord. This is the Lord’s sacred portion, and you must present it to Aaron the priest.

29Be sure to give to the Lord the best portions of the gifts given to you.

30“Also, give these instructions to the Levites: When you present the best part as your offering, it will be considered as though it came from your own threshing floor or winepress.

31You Levites and your families may eat this food anywhere you wish, for it is your compensation for serving in the Tabernacle.

32You will not be considered guilty for accepting the Lord’s tithes if you give the best portion to the priests. But be careful not to treat the holy gifts of the people of Israel as though they were common. If you do, you will die.”