John Gill

And I will sanctify my great name,.... The same with his holy name; for his greatness lies in his holiness; which name he sanctifies when he clears it from all charges and imputations; when he makes it appear to be holy and himself to be glorious in holiness; when he vindicates the honour of his name, not in a way of punishment, as he justly might, but in a way of grace and mercy; he sanctifies his name when he proclaims it, a God gracious and merciful; for it was in this way and manner he determined to make himself illustrious and glorious, and do honour to his name: which was profaned among the Heathen, which ye have profaned in the midst of them; this is repeated again and again, to show the heinousness of this sin, how ill he took it at their hands, and what a concern it gave him: and the Heathen shall know that I am the Lord, saith the Lord God, when I shall be sanctified in you before their eyes; when the Lord shall fulfil his promises, and deliver his people; when he shall sanctify, justify, and save them; and he shall be sanctified, served, and worshipped by them, and among them: it will be taken notice of by infidels themselves; and they shall hereby know, and be obliged to acknowledge, that the God of Israel is the only Lord God; that he is true and faithful to his word, righteous and holy, in his ways, the Lord God omniscient and omnipotent.