Isaiah 38:5-8

5“Go and say to Hezekiah, ‘Thus says the Lord, the God of your father David, “I have heard your prayer, I have seen your tears; behold, I will add 1fifteen years to your 2life. 6I will 3deliver you and this city from the hand of the king of Assyria; and I will defend this city.”’

7“This shall be the 4sign to you from the Lord, that the Lord will do this thing that He has spoken: 8Behold, I will 5cause the shadow on the stairway, which has gone down with the sun on the stairway of Ahaz, to go back ten steps.” So the 6sun’s shadow went back ten steps on the stairway on which it had gone down.