And his sons went and feasted in their houses, every one his day; and sent and called for their three sisters to eat and to drink with them. Feasted in their houses, every one his day - It is likely that a birthday festival is here intended. When the birthday of one arrived, he invited his brothers and sisters to feast with him; and each observed the same custom.
Related Commentaries of Job 1:4
Job 1:4
4 And his sons went and feasted in their houses, every one his day; and sent and called for their three sisters to eat and to drink with them.