Deuteronomy 18:3-5

EasyEnglish Bible

³ When you bring a bull or a sheep as a sacrifice to the Lord, give the priests their part. You must give them the animal's shoulder, the meat from its face, and its stomach. ⁴ You must also give them the first part of your grain, your wine and your olive oil. Give them the first wool that you cut from your sheep. ⁵ Do this because the Lord your God has chosen the Levites to serve him from among all your tribes. He wants them and their descendants to be ready to serve him at all times, for ever.