John Gill Commentary Deuteronomy 7:24

"And he will deliver their kings into thy hand, and thou shalt make their name to perish from under heaven: there shall no man be able to stand before thee, until thou have destroyed them." — Deuteronomy 7:24 (ASV)

And he shall deliver their kings into your hand
Who were very numerous, for though there were but seven nations, there were more kings, even one and thirty, (Joshua 12:9–24),

you shall destroy their name from under heaven;
not only destroy the name of the reigning kings, so as that they should not be remembered and made mention of any more, but put an end to the name and race of kings among them, so that they should never have any more, as they never had:

there shall no man be able to stand before you,
until you have destroyed them; the nations and their kings.