Numbers 18:26
Thus speak unto the Levites, and say unto them, When ye take of the children of Israel the tithes which I have given you from them for your inheritance, then ye shall offer up an heave offering of it for the Lord, even a tenth part of the tithe.
Cross-references
Numbers 18:19 establishes heave offerings belong to priests; here Levites give a tenth of tithes as a heave offering to them.
Numbers 15:21 commands a heave offering from first dough—parallel to the Levites' heave offering from tithes, both portions set apart.
Numbers 31:29 uses 'heave offering' for a tribute from spoils to the priest—paralleling the Levites' heave offering from tithes.
Nehemiah 10:38 describes Levites giving a tenth of tithes to priests, exactly as commanded here.
Deuteronomy 12:12 notes Levites have no inheritance, the reason they receive tithes—directly grounding Numbers 18:26.
2 Chronicles 31:4 records Hezekiah commanding the people to give the Levites their portion—later application of the tithe system.
Hebrews 7:5 references the Levitical right to take tithes according to the law—directly citing the system behind Numbers 18:26.