2 Kings 20:7-9

Revised Standard Version

⁷ And Isaiah said, “Bring a cake of figs. And let them take and lay it on the boil, that he may recover.”

⁸ And Hezeki′ah said to Isaiah, “What shall be the sign that the Lord will heal me, and that I shall go up to the house of the Lord on the third day?” ⁹ And Isaiah said, “This is the sign to you from the Lord, that the Lord will do the thing that he has promised: shall the shadow go forward ten steps, or go back ten steps?”