Deuteronomy 12:17-19

17Thou mayest not eat within thy gates the tithe of thy corn, or of thy wine, or of thine oil, or the firstlings of thy herd or of thy flock, nor any of thy vows which thou vowest, nor thy freewill offerings, nor the heave offering of thine hand:

18but thou shalt eat them before the LORD thy God in the place which the LORD thy God shall choose, thou, and thy son, and thy daughter, and thy manservant, and thy maidservant, and the Levite that is within thy gates: and thou shalt rejoice before the LORD thy God in all that thou puttest thine hand unto.

19Take heed to thyself that thou forsake not the Levite as long as thou livest upon thy land.