20 And for this cause Hezekiah the king, and the prophet Isaiah the son of Amoz, prayed and cried to heaven.
24 In those days Hezekiah was sick to the death, and prayed unto the LORD: and he spake unto him, and he gave him a sign.
31 Howbeit in the business of the ambassadors of the princes of Babylon, who sent unto him to enquire of the wonder that was done in the land, God left him, to try him, that he might know all that was in his heart.