Numbers 18:21-28 And unto the children of Levi, behold, I have given all the tithe in Israel for an inheritance, in return for their service which they serve, even the service of the tent of meeting.

JPS_ASV_Byz⁽ⁱ⁾ ²¹ And unto the children of Levi, behold, I have given all the tithe in Israel for an inheritance, in return for their service which they serve, even the service of the tent of meeting. ²² And henceforth the children of Israel shall not come nigh the tent of meeting, lest they bear sin, and die. ²³ But the Levites alone shall do the service of the tent of meeting, and they shall bear their iniquity; it shall be a statute for ever throughout your generations, and among the children of Israel they shall have no inheritance. ²⁴ For the tithe of the children of Israel, which they set apart as a gift unto the LORD, I have given to the Levites for an inheritance; therefore I have said unto them: Among the children of Israel they shall have no inheritance.' ²⁵ And the LORD spoke unto Moses, saying: ²⁶ 'Moreover thou shalt speak unto the Levites, and say unto them: When ye take of the children of Israel the tithe which I have given you from them for your inheritance, then ye shall set apart of it a gift for the LORD, even a tithe of the tithe. ²⁷ And the gift which ye set apart shall be reckoned unto you, as though it were the corn of the threshing-floor, and as the fulness of the wine-press. ²⁸ Thus ye also shall set apart a gift unto the LORD of all your tithes, which ye receive of the children of Israel; and thereof ye shall give the gift which is set apart unto the LORD to Aaron the priest.