Yeshayah 38:7-9

Orthodox Jewish Bible

⁷ And this shall be HaOt (the Sign) unto thee from Hashem, that Hashem will do this thing that He hath spoken;

⁸ Hineni, I will bring again the tzel (shadow) of the hama’alot (the steps), which has gone down with the shemesh on the Ma’alot Achaz (sundial of Ahaz), so that it goes eser ma’alot (ten steps) backward. So the shemesh went back eser maalot (ten steps) on the ma’alot on which it had gone down.

⁹ The writing of Chizkiyahu Melech Yehudah, when he had been ill, and was recovered from his illness: