2 Kings 20:4-8

4But before Isaiah had left the middle courtyard, this message came to him from the Lord:

5“Go back to Hezekiah, the leader of my people. Tell him, ‘This is what the Lord, the God of your ancestor David, says: I have heard your prayer and seen your tears. I will heal you, and three days from now you will get out of bed and go to the Temple of the Lord.

6I will add fifteen years to your life, and I will rescue you and this city from the king of Assyria. I will defend this city for my own honor and for the sake of my servant David.’”

7Then Isaiah said, “Make an ointment from figs.” So Hezekiah’s servants spread the ointment over the boil, and Hezekiah recovered!

8Meanwhile, Hezekiah had said to Isaiah, “What sign will the Lord give to prove that he will heal me and that I will go to the Temple of the Lord three days from now?”