פירוש על דברים 7:24

ונתן מלכיהם בידך, "He will deliver their kings into your hand, etc." You will capture them alive. We have proof of this in Joshua 10,26.

ונתן מלכיהם בידך והאבדת את שמם, for allowing any of these Canaanites to survive would become an ongoing source of irritation for you, as demonstrated by the young Haddad, sole survivor of the people of Edom, who became a lifelong source of irritation (militarily) for such a powerful king as Solomon. (Kings I 11,14 and onwards)

ונתן מלכיהם בידך והאבדת את שמם, “He will deliver their kings into your hand and you will cause their reputation to perish.” The few Canaanites remaining in the land during that time will not amount to anything, politically or militarily. Anyone who tries to make a stand against you will fail.