2 Kings 20:12-15

12At that time Merodach-baladan the son of Baladan, king of Babylon, sent envoys with letters and a present to Hezekiah, for he heard that Hezekiah had been sick.

13And Hezekiah welcomed them, and he showed them all his treasure house, the silver, the gold, the spices, the precious oil, his armory, all that was found in his storehouses. There was nothing in his house or in all his realm that Hezekiah did not show them.

14Then Isaiah the prophet came to King Hezekiah, and said to him, "What did these men say? And from where did they come to you?" And Hezekiah said, "They have come from a far country, from Babylon."

15He said, "What have they seen in your house?" And Hezekiah answered, "They have seen all that is in my house; there is nothing in my storehouses that I did not show them."