Vengeance belongeth unto me - Greek, “To Me belongeth vengeance”: exactly according with Paul’s quotation, Rom 12:19, of the same text.
Lord shall judge his people - in grace, or else anger, according as each deserves: here, “judge,” so as to punish the reprobate apostate; there, “judge,” so as to interpose in behalf of, and save His people (Deu 32:36).