Numbers 18:25-32 - Instructions For The Levites
25 And Jehovah will speak to Moses, saying, 26 And to the Levites thou shalt speak and say to them, When ye shall take from the sons of Israel the truth which I gave to you from them for your inheritance, and ye lifted up an offering of Jehovah, a tenth from the tenth. 27 And your offerings were reckoned to you as the grain of the threshing-floor, and as the filling up from the winepress. 28 So shall ye also lift up an offering of Jehovah from all your tenths, which ye shall take from the sons of Israel; and ye gave from it the offering of Jehovah to. Aaron the priest 29 From all your gifts ye shall lift up all the offerings of Jehovah, from all its fat consecrated from it
30 And say to them, In your offering its fat from it, and it was reckoned to the Levites as the produce of the threshing-floor, and as the produce of the wine-press. 31 And ye ate it in every place, ye and your house; for it is the reward to you for your service in the tent of appointment 32 And ye shall not bear sin for it in your lifting up its fat from it: and the holy things of the sons of Israel ye shall not defile, and ye shall not die.