The abstract noun "knowledge" can be translated as a verb. These words can be translated in active form. Alternate translation: "People need to know what is precious and pleasant if they are to fill their rooms" (See: [[rc://en/ta/man/translate/figs-abstractnouns]] and [[rc://en/ta/man/translate/figs-activepassive]] and [[rc://en/ta/man/translate/figs-explicit]])