2 Kings 20:8-10

Lexham English Bible

⁸ Hezekiah said to Isaiah, “What is the sign that Yahweh will heal me that I shall go up on the third day to the temple of Yahweh?” ⁹ Isaiah said, “This is the sign for you from Yahweh that Yahweh will do the thing that he has promised: Shall the shadow advance ten steps or shall it return ten steps?” ¹⁰ Hezekiah answered, “It is easy for the shadow to lengthen ten steps. No, but let the shadow return backwards ten steps.”