Isaiah 38:5-8

5“Go and tell Hezekiah, ‘This is what the Lord God of your ancestor David says: I have heard your prayer; I have seen your tears. Look, I am going to add fifteen years to your life.

6And I will rescue you and this city from the grasp of the king of Assyria; I will defend this city.

7This is the sign to you from the Lord that he will do what he has promised:

8I am going to make the sun’s shadow that goes down on the stairway of Ahaz go back by ten steps.’” So the sun’s shadow went back the ten steps it had descended.