When Hezekiah hears the Assyrian commander's speech, he tears his clothes, covers himself with sackcloth and goes into the house of the Lord. He sends Eliakim, Shebna and the senior priests to Isaiah, asking him to pray for the remnant. Isaiah answers that they should not fear the blasphemies of the king of Assyria's servants: the Lord will make him hear a rumor, return to his land and fall by the sword there.
The commander finds the king of Assyria fighting against Libnah. Sennacherib hears that Tirhakah, king of Cush, has set out to fight him and sends Hezekiah a letter warning him not to trust his God, since no god has delivered other nations. Hezekiah takes the letter, goes up to the temple, spreads it before the Lord and prays. He acknowledges that the Lord alone is God of all the kingdoms of the earth, who made heaven and earth, and asks him to save him so that all may know that he alone is God.
Isaiah sends a message: the Lord has heard the prayer. He announces that Sennacherib has boasted against the Holy One of Israel, that the Lord planned it long ago, and that he will turn him back by the way he came, with a hook in his nose and a bit in his mouth. He gives a sign: this year and the next they will eat what grows by itself, and in the third year they will sow and reap. Sennacherib will not enter Jerusalem or shoot an arrow there; the Lord will defend the city for his own sake and for David's.
That night the angel of the Lord strikes down 185,000 in the Assyrian camp. Sennacherib breaks camp and returns to Nineveh. While he is worshiping in the temple of his god Nisroch, his sons Adrammelech and Sharezer kill him with the sword and escape to Ararat. His son Esarhaddon reigns in his place.