Numbers 18:24-26

New International Version - UK

²⁴ Instead, I give to the Levites as their inheritance the tithes that the Israelites present as an offering to the Lord. That is why I said concerning them: “They will have no inheritance among the Israelites.”’

²⁵ The Lord said to Moses, ²⁶ ‘Speak to the Levites and say to them: “When you receive from the Israelites the tithe I give you as your inheritance, you must present a tenth of that tithe as the Lord’s offering.