Numbers 18:31 BBE

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.

³²  And no sin will be yours on account of it, when the best of it has been lifted up on high; you are not to make a wrong use of the holy things of the children of Israel, so that death may not overtake you.