2 Kings 20:6-8

Darby Translation

⁶ and I will add to thy days fifteen years; and I will deliver thee and this city out of the hand of the king of Assyria, and I will defend this city for mine own sake, and for my servant David's sake.

⁷ And Isaiah said, Take a cake of figs. And they took and laid it on the boil, and he recovered.

⁸ And Hezekiah said to Isaiah, What [shall be] the sign that Jehovah will heal me, and that I shall go up into the house of Jehovah the third day?