Numbers 18:27-29

Amplified Bible

²⁷ Your offering shall be credited to you as the grain from the threshing floor or as the full produce from the wine vat. ²⁸ Likewise you shall also present an offering to the Lord from all your tithes, which you receive from the Israelites; and from it you shall give the Lord’s offering to Aaron the priest. ²⁹ Out of all your gifts, you shall present every offering due to the Lord, from all the best of it, even the sacred part from them.’