Deuteronomy 18:1-4

1The priests, the Levites, [and] the whole tribe of Levi, shall have no portion nor inheritance with Israel: Jehovah's offerings by fire, and his inheritance shall they eat,

2but they shall have no inheritance among their brethren: Jehovah, he is their inheritance, as he hath said unto them.

3And this shall be the priest's due from the people, from them that sacrifice a sacrifice, whether ox, or sheep: they shall give unto the priest the shoulder, and the jawbones, and the maw.

4The firstfruits [also] of thy corn, of thy new wine, and of thine oil, and the firstfruits of the shearing of thy sheep, shalt thou give him;