Isaiah 38:8
"Behold, I will bring again the shadow of the degrees, which is gone down in the sun dial of Ahaz, ten degrees backward. So the sun returned ten degrees, by which degrees it was gone down."
Cross References (ranked by relevance)
Matthew 16:1
The Pharisees also with the Sadducees came, and tempting desired him that he would shew them a sign from heaven.
2 Chronicles 32:24
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.
2 Chronicles 32:31
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.