Forsake not the Levite - These had no inheritance, and were to live by the sanctuary: if therefore the offerings were withheld by which the Levites were supported, they of course must perish. Those who have devoted themselves to the service of God in ministering to the salvation of the souls of men, should certainly be furnished at least with all the necessaries of life. Those who withhold this from them sin against their own mercies, and that ordinance of God by which a ministry is established for the salvation of souls.

Take heed to thyself that thou forsake not the Levite,.... By withholding from him the tithes appointed for his maintenance; or rather by neglecting to take him with him in order to partake of the feast or entertainment before spoken of:
as long as thou livest upon the earth; so that it was not one time only, but always; whenever he ate these holy things before the Lord, as long as he lived, he was to be careful he had the Levite with him, for a reason given, Deuteronomy 12:12.