Adam Clarke on 2 Kings 20:13

Hezekiah hearkened unto them - Instead of וישמע vaiyishma, he hearkened, וישמח vaiyismach, he rejoiced or was glad, is the reading of twelve of Kennicott's and De Rossi's MSS., the parallel place, Isa 39:2, the Septuagint, Syriac, Vulgate, Arabic, some copies of the Targum, and the Babylonian Talmud.

All the house of his precious things - Interpreters are not well agreed about the meaning of the original נכתה nechothoh, which we here translate precious things, and in the margin spicery or jewels. I suppose the last to be meant.

There was nothing in his house - He showed them through a spirit of folly and exultation, all his treasures, and no doubt those in the house of the Lord. And it is said, 2Chr 32:31, that in this business God left him to try him, that he might know all that was in his heart; and this trial proved that in his heart there was little else than pride and folly.