And Hezekiah said unto Isaiah, What [shall be] the sign that the Lord will heal me, and that I shall go up into the house of the Lord the third day? (20:8)

And Isaiah said, This sign shalt thou have of the Lord, that the Lord will do the thing that he hath spoken: shall the shadow go forward ten degrees, or go back ten degrees? (20:9)

And Hezekiah answered, It is a light thing for the shadow to go down ten degrees: nay, but let the shadow return backward ten degrees. (20:10)

And Isaiah the prophet cried unto the Lord: and he brought the shadow ten degrees backward, by which it had gone down in the dial of Ahaz. (20:11)