Isaiah 38:7-8

7“This shall be the 1sign to you from the Lord, that the Lord will do this thing that He has spoken: 8Behold, I will 2cause the shadow on the stairway, which has gone down with the sun on the stairway of Ahaz, to go back ten steps.” So the 3sun’s shadow went back ten steps on the stairway on which it had gone down.