2 Kings 20:6-8

6I will add fifteen years to your 1life, and I will deliver you and this city from the hand of the king of Assyria; and 2I will defend this city for My own sake and for My servant David’s sake.”’” 7Then Isaiah said, “Take a cake of figs.” And they took and laid it on the boil, and he recovered.

8Now Hezekiah said to Isaiah, “What will be the sign that the Lord will heal me, and that I shall go up to the house of the Lord the third day?”