2 Kings 20:8-10

New International Version - UK

⁸ Hezekiah had asked Isaiah, ‘What will be the sign that the Lord will heal me and that I will go up to the temple of the Lord on the third day from now?’

⁹ Isaiah answered, ‘This is the Lord’s sign to you that the Lord will do what he has promised: shall the shadow go forward ten steps, or shall it go back ten steps?’

¹⁰ ‘It is a simple matter for the shadow to go forward ten steps,’ said Hezekiah. ‘Rather, let it go back ten steps.’