And this shall be a sign unto thee: In this year, eat that which is fallen. In the second year, such as groweth of itself. In the third year, sow and reap and plant vineyards; and eat the fruit thereof.

Then said Hezekiah to Isaiah, "What is the sign that the LORD will heal me, and that I shall go up into the house of the LORD the third day?"

And Isaiah said, "This sign shalt thou have of the LORD, that the LORD will do that he hath spoken: shall the shadow go forward ten degrees, or go back again ten degrees?"