John Lightfoot on Matthew 11:21

[In Tyre and Sidon.] He compares the cities of the Jews with the cities of the Canaanites, who were of a cursed original; "but yet these cities, of a cursed seed and name, if they had been partakers of the miracles done among you, had not hardened themselves to such a degree of madness and obstinacy as you have done: but had turned from their heathenism and Canaanitism unto the knowledge of the gospel; or, at least, had betook themselves to such a repentance as would have prevented vengeance." So the repentance of the Ninevites, however it were not to salvation, yet it was such as preserved them, and freed their city from the wrath and scourge that hung over them. The most horrid stiffness of the Jews is here intimated, of all impious men the most impious, of all cursed wretches the most cursed.