Leviticus

The firstfruit also of thy corn, of thy wine, and of thine oil, and the first of the fleece of thy sheep, shalt thou give him.

And the Lord spake unto Aaron, Behold, I also have given thee the charge of mine heave offerings of all the hallowed things of the children of Israel; unto thee have I given them by reason of the anointing, and to thy sons, by an ordinance for ever.

All the best of the oil, and all the best of the wine, and of the wheat, the firstfruits of them which they shall offer unto the Lord, them have I given thee.

And Moses took the breast, and waved it for a wave offering before the Lord: for of the ram of consecration it was Moses’ part; as the Lord commanded Moses.