2 Kings 20:9-13

Isaiah said, “This shall be the sign to you from the Lord, that the Lord will perform the word that He has spoken: shall the shadow go forward ten steps or go back ten steps?”

So Hezekiah said, “It is easy for the shadow to decline ten steps; no, but have the shadow turn backward ten steps.”

Then Isaiah the prophet called out to the Lord, and He brought the shadow on the stairway back ten steps by which it had gone down on the stairway of Ahaz. Hezekiah Shows Babylon His Treasures

At that time Berodach-baladan, a son of Baladan, king of Babylon, sent letters and a gift to Hezekiah, because he heard that Hezekiah had been sick.

And Hezekiah listened to them, and showed them all his treasure house, the silver, the gold, the balsam oil, the scented oil, the house of his armor, and everything that was found in his treasuries. There was nothing in his house nor in all his realm that Hezekiah did not show them.