en_tn/1ch/09/33.md

fathers' houses

extended families, people related to each other who usually lived in different houses, what the UDB calls "clans"

they were free from work

"they did not have to do other work"

carry out their assigned tasks

"complete the tasks they needed to do"

day and night

This means "at all times" and can be translated using a phrase or word from your language or culture that gives the same meaning. (See: rc://en/ta/man/translate/figs-merism)