Isaiah 38:5-8

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

6and I will rescue you and this city from the king of Assyria. Yes, I will defend this city.

7“‘And this is the sign from the Lord to prove that he will do as he promised:

8I will cause the sun’s shadow to move ten steps backward on the sundial of Ahaz!’” So the shadow on the sundial moved backward ten steps.