Albert Barnes Commentary 2 Kings 20:13

"And Hezekiah hearkened unto them, and showed them all the house of his precious things, the silver, and the gold, and the spices, and the precious oil, and the house of his armor, and all that was found in his treasures: there was nothing in his house, nor in all his dominion, that Hezekiah showed them not." — 2 Kings 20:13 (ASV)

Hezekiah hearkened unto them, and showed them - The Jewish king lent a favorable ear to the proposals of the ambassadors, and exhibited to them the resources which he possessed, in order to induce them to report well of him to their master.

All the house of his precious things - literally, the “spice-house;” the phrase had acquired the more generic sense of “treasure-house” from the fact that the gold, the silver, and the spices were all stored together.