Have you not heard long ago ... - Rather, Have you not heard that from long ago I did this, from ancient times I fashioned it? etc.…

Have you not heard ...? — Have you not heard? In the far past I made it; in days of old I fashioned it; now I…

(See Gill on 2 Kings 19:1)

All Sennacherib's movements were under Divine cognizance. God Himself undertakes to defend the city; and that person, that place, which He undertak…