Numbers 18:20-24 - Duties Of The Levites
20 And Jehovah said to Aaron, You shall have no inheritance in their land, neither shall you have any part among them. I am your part and your inheritance among the sons of Israel.
21 And behold, I have given the sons of Levi all the tenth in Israel for an inheritance, for their service which they serve, the service of the tabernacle of the congregation. 22 Neither must the sons of Israel come near the tabernacle of the congregation from now on, lest they bear sin and die. 23 But the Levites shall do the service of the tabernacle of the congregation, and they shall bear their iniquity, a statute forever throughout your generations, that among the sons of Israel they have no inheritance. 24 But the tithes of the sons of Israel, which they offer as a heave offering to Jehovah, I have given to the Levites to inherit. Therefore I have said to them, Among the sons of Israel they shall have no inheritance.
47 But the Levites, according to the tribe of their fathers, were not numbered among them. 48 For Jehovah had spoken to Moses saying, 49 Only you shall not number the tribe of Levi, neither take the sum of them among the sons of Israel. 50 But you shall set the Levites over the tabernacle of testimony, and over all its vessels, and over all its things. They shall carry the tabernacle and all its vessels. And they shall serve it, and shall camp around the tabernacle. 51 And when the tabernacle sets forth, the Levites shall take it down. And when the tabernacle is to be pitched, the Levites shall set it up. And the stranger who comes near shall die.
52 And the sons of Israel shall pitch their tents, each man by his own camp, and each man by his own banner, throughout their armies. 53 But the Levites shall pitch around the tabernacle of testimony, so that there may be no wrath upon the congregation of the sons of Israel. And the Levites shall keep the charge of the tabernacle of testimony. 54 And the sons of Israel did according to all that Jehovah commanded Moses. So they did.