Numbers 18:20-27

²⁰And the Lord said to Aaron, Thou shalt have no inheritance in their land, neither shalt thou have any portion among them; for I am thy portion and thine inheritance in the midst of the children of Israel.

²¹And, behold, I have given to the sons of Levi every tithe in Israel for an inheritance for their services, whereinsoever they perform ministry in the tabernacle of witness.

²²And the children of Israel shall no more draw nigh to the tabernacle of witness to incur fatal guilt.

²³And the Levite himself shall perform the service of the tabernacle of witness; and they shall bear their iniquities, it is a perpetual statute throughout their generations; and in the midst of the children of Israel they shall not receive an inheritance.

²⁴Because I have given as a distinct portion to the Levites for an inheritance the tithes of the children of Israel, whatsoever they shall offer to the Lord; therefore I said to them, In the midst of the children of Israel they shall have no inheritance.

²⁵And the Lord spoke to Moses, saying,

²⁶Thou shalt also speak to the Levites, and shalt say to them, If ye take the tithe from the children of Israel, which I have given you from them for an inheritance, then shall ye separate from it a heave offering to the Lord, a tenth of the tenth.

²⁷And your heave offerings shall be reckoned to you as corn from the floor, and an offering from the winepress.