And it shall be Aaron's and his sons' by a statute for ever, from the children of Israel: for it is a heave-offering: and it shall be a heave-offering from the children of Israel of the sacrifice of their peace-offerings, even their heave-offering to the LORD.
Thus ye also shall offer a heave-offering to the LORD of all your tithes which ye receive of the children of Israel; and ye shall give of them the LORD'S heave-offering to Aaron the priest.
Therefore thou shalt say to them, When ye have heaved from it the best of it, then it shall be counted to the Levites as the increase of the threshing-floor, and as the increase of the wine-press.