2 Kings 20:7-9

Darby Translation

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?

⁹ And Isaiah said, This [shall be] the sign to thee from Jehovah, that Jehovah will do the thing that he hath spoken: shall the shadow go forward ten degrees, or go back ten degrees?