In those days Hezekiah becomes sick and is at the point of death. The prophet Isaiah the son of Amoz comes to him and says, from the Lord, that he must set his house in order, for he will die and not recover. Hezekiah turns his face to the wall and prays to the Lord: he remembers that he has walked before him in faithfulness and with a whole heart, and has done what is good in his sight. And Hezekiah weeps bitterly.
Before Isaiah has gone out of the middle court, the word of the Lord comes: go and tell Hezekiah, the leader of my people, that I have heard his prayer and seen his tears; I will add fifteen years to his life, and I will deliver you and this city out of the hand of the king of Assyria; I will defend this city. As a sign that the Lord will do what he has said, he will make the shadow that has gone down on the dial of Ahaz turn back ten steps. So it happens. Later the account notes that Isaiah told them to apply a lump of figs to the boil, and Hezekiah recovered; he had asked what the sign would be that he would go up to the house of the Lord.
Then comes a writing of Hezekiah, after his recovery. He tells how he thought that in the middle of his days he would go to the gates of Sheol, deprived of the rest of his years, and would no longer see the Lord in the land of the living. His life was pulled up like a shepherd's tent and rolled up like a weaver's cloth. He asked the Lord to be his pledge. Then he acknowledges that the Lord has delivered him and that, even in bitterness, he has kept his life from the pit, because he has cast all his sins behind his back. Sheol cannot thank you, but the living, the living, he thanks you, as I do today. The father makes known to the children your faithfulness. The Lord is ready to save me, and we will play on stringed instruments all the days of our lives at the house of the Lord.