The phrase "in the days of" refers to the time when a person was alive. This could be translated as "when Abraham, his father, was living." (See: [[rc://en/ta/man/translate/figs-idiom]])
"So Isaac and his household left." Only Issac is mentioned because he is the leader, but his family and servants were with him. (See: [[rc://en/ta/man/translate/figs-explicit]])