en_tn/jhn/08/35.md

in the house

Here "house" is a metonym for "family." AT: "as a permanent member of a family" (See: rc://en/ta/man/translate/figs-metonymy)

the son remains forever

This is an ellipsis. You may translate it by including the implied words. AT: "the son is a member of the family forever" (See: rc://en/ta/man/translate/figs-ellipsis)