Leviticus 27:30-33

Redemption of the Tithe

27:30 “‘Any tithe of the land, from the grain of the land or from the fruit of the trees, belongs to the Lord; it is holy to the Lord. 27:31 If a man redeems part of his tithe, however, he must add one fifth to it. 27:32 All the tithe of herd or flock, everything which passes under the rod, the tenth one will be holy to the Lord. 27:33 The owner must not examine the animals to distinguish between good and bad, and he must not exchange it. If, however, he does exchange it, both the original animal and its substitute will be holy. It must not be redeemed.’”

Numbers 18:26-32

18:26 “You are to speak to the Levites, and you must tell them, ‘When you receive from the Israelites the tithe that I have given you from them as your inheritance, then you are to offer up from it as a raised offering to the Lord a tenth of the tithe. 18:27 And your raised offering will be credited to you as though it were grain from the threshing floor or as new wine from the winepress. 18:28 Thus you are to offer up a raised offering to the Lord of all your tithes which you receive from the Israelites; and you must give the Lord’s raised offering from it to Aaron the priest. 18:29 From all your gifts you must offer up every raised offering due the Lord, from all the best of it, and the holiest part of it.’

18:30 “Therefore you will say to them, ‘When you offer up the best of it, then it will be credited to the Levites as the product of the threshing floor and as the product of the winepress. 18:31 And you may eat it in any place, you and your household, because it is your wages for your service in the tent of meeting. 18:32 And you will bear no sin concerning it when you offer up the best of it. And you must not profane the holy things of the Israelites, or else you will die.’”

Numbers 18:2

18:2 “Bring with you your brothers, the tribe of Levi, the tribe of your father, so that they may join with you and minister to you while you and your sons with you are before the tent of the testimony.

Numbers 31:4-6

31:4 You must send to the battle a thousand men from every tribe throughout all the tribes of Israel.” 31:5 So a thousand from every tribe, twelve thousand armed for battle in all, were provided out of the thousands of Israel.

Campaign Against the Midianites

31:6 So Moses sent them to the war, one thousand from every tribe, with Phinehas son of Eleazar the priest, who was in charge of the holy articles and the signal trumpets.

Nehemiah 13:10

13:10 I also discovered that the grain offerings for the Levites had not been provided, and that as a result the Levites and the singers who performed this work had all gone off to their fields.