Deuteronomy 12:17-19

17Thou mayest not eat within thy gates the tithe of thy grain, or of thy wine, or of thy oil, or the firstlings of thy herds or of thy flock, nor any of thy vows which thou vowest, nor thy freewill offerings, or heave offering of thine hand: 18But thou must eat them before Yhwh thy God in the place which Yhwh 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 Yhwh thy God in all that thou puttest thine hands unto. 19Take heed to thyself that thou forsake not the Levite as long as thou livest upon the earth.1