2nd Kings 20:7

4 Now before Isaiah had gone out of the middle of the town, the word of the Lord came to him, saying,

5 Go back and say to Hezekiah, the ruler of my people, The Lord, the God of David your father, says, Your prayer has come to my ears, and I have seen your weeping; see, I will make you well: on the third day you will go up to the house of the Lord.

6 I will give you fifteen more years of life; and I will keep you and this town safe from the hands of the king of Assyria; I will keep this town safe, for my honour, and for the honour of my servant David.

7 Then Isaiah said, Take a cake of figs. So they took it and put it on his wound, and he got better.

8 And Hezekiah said to Isaiah, What is to be the sign that the Lord will make me well, and that I will go up to the house of the Lord on the third day?

9 And Isaiah said, This is the sign the Lord will give you, that he will do what he has said; will the shade go forward ten degrees or back?

10 And Hezekiah said in answer, It is a simple thing for the shade to go forward; but let it go back ten degrees.