Numbers 18:29 BBE

²⁷  And this lifted offering is to be put to your credit as if it was grain from the grain-floor and wine from the vines.

²⁸  So you are to make an offering lifted up to the Lord from all the tenths which you get from the children of Israel, giving out of it the Lord's lifted offering to Aaron the priest.

²⁹  From everything given to you, let the best of it, the holy part of it, be offered as a lifted offering to the Lord.

³⁰  Say to them, then, When the best of it is lifted up on high, it is to be put to the account of the Levites as the increase of the grain-floor and of the place where the grapes are crushed.

³¹  It is to be your food, for you and your families in every place: it is your reward for your work in the Tent of meeting.