2 Kings 20:8-10

New Revised Standard Version, Anglicised Catholic Edition

⁸ Hezekiah said to Isaiah, ‘What shall be the sign that the Lord will heal me, and that I shall go up to the house of the Lord on the third day?’ ⁹ Isaiah said, ‘This is the sign to you from the Lord, that the Lord will do the thing that he has promised: the shadow has now advanced ten intervals; shall it retreat ten intervals?’ ¹⁰ Hezekiah answered, ‘It is normal for the shadow to lengthen ten intervals; rather let the shadow retreat ten intervals.’