These two sentences mean the same thing and are used together to emphasize how much Hezekiah showed the men. (See: [[rc://en/ta/man/translate/figs-parallelism]])
# everything in my house
This is a generalization, as Hezekiah showed them many things, but not necessarily everything in the palace. AT: "almost everything in my house" (See: [[rc://en/ta/man/translate/figs-hyperbole]])
# There is nothing among my valuable things that I have not shown them