Jamieson, Fausset and Brown on Jeremiah 22:15

15. closest thyself--rather, "thou viest," that is, art emulous to surpass thy forefathers in the magnificence of thy palaces.

eat and drink--Did not Josiah, thy father, enjoy all that man really needs for his bodily wants? Did he need to build costly palaces to secure his throne? Nay, he did secure it by "judgment and justice"; whereas thou, with all thy luxurious building, sittest on a tottering throne.

then--on that account, therefore.