Matthew Henry on 2 Chronicles 32:9-23
This story of the rage and blasphemy of Sennacherib, Hezekiah's prayer, and the deliverance of Jerusalem by the destruction of the Assyrian army, we had more at large in the book of Kings, 2 Kings 18 and 19. It is contracted here, yet large enough to show these three things: -
I. The impiety and malice of the church's enemies. Sennacherib has his hands full in besieging Lachish (Ch2 32:9), but hears that Hezekiah is fortifying Jerusalem and encouraging his people to stand it out; and therefore, before he come in person to besiege it, he sends messengers to make speeches, and he himself writes letters to frighten Hezekiah and his people into a surrender of the city. See, 1. His great malice…
Read the whole note in the consoleJamieson-Fausset-Brown on 2 Chronicles 32:18
they cried with a loud voice . . . unto the people of Jerusalem . . . on the wall--It appears that the wall on the west side of the city reached as far to the side of the uppermost pool of Gihon at that time as it does now, if not farther; and the wall was so close to that pool that those sent to negotiate with the Assyrian general answered him in their own tongue (see on Kg2 18:27).
Adam Clarke on 2 Chronicles 32:17
Wrote also letters - See Kg2 19:9, Kg2 19:14.
John Gill on 2 Chronicles 32:20
And for this cause Hezekiah the king, and the prophet Isaiah, the son of Amoz, prayed and cried to heaven. To God in heaven; of the prayer of Hezekiah on this account, see Isaiah 37:15, and the notes there; See Gill on Isaiah 37:15, Isaiah 37:16, Isaiah 37:17, Isaiah 37:18, Isaiah 37:19, Isaiah 37:20 and though we read not of the prayer of Isaiah, no doubt he made one, as Hezekiah desired, and since he received a message from the Lord, which he sent to Hezekiah, Isaiah 37:4.
Tyndale Open Study Notes on 2 Chronicles 32:10-19
The Assyrian king’s threats clarified the critical issues for the people of Jerusalem. The real question was whether or not to trust in God. The enemy king suggested that Hezekiah could not be trusted (32:11-12) because he had offended the Lord by tearing down God’s shrines and altars. However, just the opposite was true. This reform was Hezekiah’s greatest act of faithfulness to the Lord. The question came down to whether God could be trusted against the power of Assyria (32:11-15).