Sforno on Deuteronomy 32:37/ספורנו על דברים ל״ב:ל״ז

1ואמר, at that point G’d will say to Israel

2אי אלוהימו, where is now this god of the gentile nations upon whom you have relied, spurning Me? This is the period when all of G’d’s agents who had been assigned as protective forces for the gentile nations will be simultaneously removed from their function. Compare Isaiah 24,21.