Numbers 18:26-29

²⁶'And unto the Levites thou dost speak; and thou hast said unto them, When ye take from the sons of Israel the tithe which I have given to you from them, for your inheritance, then ye have lifted up from it the heave-offering of Jehovah, a tithe of the tithe;

²⁷and your heave-offering hath been reckoned to you as corn from the threshing-floor, and as fulness from the wine-vat;

²⁸so ye do lift up — ye also — the heave-offering of Jehovah from all your tithes which ye receive from the sons of Israel; and ye have given from it the heave-offering of Jehovah to Aaron the priest;

²⁹out of all your gifts ye do lift up the whole heave-offering of Jehovah; out of all its fat, — its hallowed part — out of it.