By the way that he came, by the same he shall return, and he shall not come into this city, declares the LORD.
We have here the gracious copious answer which God gave to Hezekiah's prayer. The message which he sent him by the same hand (Kg2 19:6, Kg2 19:7), one would think, was an answer sufficient to his prayer; but, that he might have strong consolation, he was encouraged by two immutable things, in which it was impossible for God to lie, Heb 6:18.
Commenting on 2 Kings 19:20-34
HEZEKIAH'S PRAYER. (2Ki. 19:14-34) Hezekiah received the letter . . . and went up into the house of the Lord--Hezekiah, after reading it, hastened into the temple, spread it in the childlike confidence of faith before the Lord, as containing taunts deeply affecting the divine honor, and implored deliverance from this proud defier of God and man.
Commenting on 2 Kings 19:14-34
shall not come into this city--nor approach near enough to shoot an arrow, not even from the most powerful engine which throws missiles to the greatest distance, nor shall he occupy any part of the ground before the city by a fence, a mantelet, or covering for men employed in a siege, nor cast (raise) a bank (mound) of earth, overtopping the city walls, whence...