2 Kings 20:4-8

4Before Isaiah had left the middle court, the word of the Lord came to him:

5“Go back and tell Hezekiah, the ruler of my people, ‘This is what the Lord, the God of your father David, says: I have heard your prayer and seen your tears; I will heal you. On the third day from now you will go up to the temple of the Lord.

6I will add fifteen years to your life. And I will deliver you and this city from the hand of the king of Assyria. I will defend this city for my sake and for the sake of my servant David.’ ”

7Then Isaiah said, “Prepare a poultice of figs.” They did so and applied it to the boil, and he recovered.

8Hezekiah had asked Isaiah, “What will be the sign that the Lord will heal me and that I will go up to the temple of the Lord on the third day from now?”