Deuteronomy 12:17-19

17Do not eat any of your offerings to the Lord in the places where you live. Do not eat the tithes that you have taken from your grain, your new wine or your olive oil. Do not eat at home the firstborn animals from your cows, sheep or goats. Do not eat the gifts that you have promised, the gifts that you choose to give or any other special gifts.

18You may only eat these offerings in the place that the Lord will choose as his special home. That is true for you, your children, your servants and the Levites who live in your towns. At that place, you should meet with the Lord your God and you should enjoy the results of all your work.

19As long as you live in the land, be careful to take care of the Levites.