2 Kings 20:12-13

12At that time Merodach-Baladan son of Baladan, king of Babylon, sent letters and a gift to Hezekiah, for he had heard that Hezekiah was ill.

13Hezekiah welcomed them and showed them his whole storehouse, with its silver, gold, spices, and high quality olive oil, as well as his armory and everything in his treasuries. Hezekiah showed them everything in his palace and in his whole kingdom.