2 Kings 20:7

Then Isaiah said, "Take a lump of figs." So they took and laid it on the boil, and he recovered.

Surrounding context

20:6 And I will add to your days fifteen years. I will deliver you and this city from the hand of the king of Assyria; and I will defend this city for My own sake, and for the sake of My servant David.""'

20:7 Then Isaiah said, "Take a lump of figs." So they took and laid it on the boil, and he recovered.

20:8 And Hezekiah said to Isaiah, "What is the sign that the LORD will heal me, and that I shall go up to the house of the LORD the third day?"

Translation and sources