Charles Ellicott Commentary Isaiah 33:6

"And there shall be stability in thy times, abundance of salvation, wisdom, and knowledge: the fear of Jehovah is thy treasure." — Isaiah 33:6 (ASV)

Wisdom and knowledge ... —The words are used in the higher sense, as in Proverbs 1:1-4, in contrast with the craft and devices of men, just as the “fear of the Lord” is the true treasure, in contrast with the silver and gold in which Hezekiah had been led to place his trust.