Job's family life is marked by immense wealth and an extraordinary bond among his children, who regularly gather for shared meals. This routine highlights their peace and brotherhood, functioning as an ongoing, constant part of their lives [רש״י, מצודת דוד]. Each son has a designated day to host the entire family in his own home [מצודת דוד, ביאור שטיינזלץ]. This orderly rotation is specifically designed to maintain harmony and prevent any feelings of jealousy or hatred among the brothers [מלבי״ם].
There are different views on how often these gatherings occur. Some suggest it is a daily cycle, with a different brother hosting each day [מצודת דוד, ביאור שטיינזלץ]. Others argue that a man who reveres God like Job would never tolerate a reality of endless, empty feasting. Therefore, they propose the children gather only occasionally or perhaps once a year [רמב״ן, חומת אנך]. Regardless of the frequency, Job himself is notably absent. Those who truly revere God avoid places of heavy drinking and dining, even when hosted by their own family. The sons pursue these material pleasures on their own, without their father's approval, which is why they invite their sisters but do not ask Job to join them [תקות אנוש]. Ultimately, this abundance of wealth and constant indulgence creates a spiritual danger, opening the door to the tragedy that eventually strikes them [אלשיך].
When the brothers host, they make sure to invite their three sisters, who are likely unmarried at the time [ביאור שטיינזלץ]. The way they arrange these gatherings reflects a strict standard of modesty. To prevent any inappropriate mixing with outsiders, the brothers first go alone to set up the feast. Only after confirming that no strangers are present do they send for their sisters, ensuring they eat and drink exclusively in the safety of their family [אלשיך]. Yet, this beautiful display of sibling unity carries a dark shadow. The habit of all the children gathering under a single roof points directly toward their impending doom, setting the stage for the disaster where they will all be caught together in the collapse of one house [תקות אנוש].