The climax of the tense encounter between Joseph's brothers and the Egyptian official unfolds through a highly calculated search. To conceal the pre-planned plot, the official in charge of Joseph’s house conducts the inspection systematically, beginning with the oldest brother and ending with the youngest. The primary approach among commentators is that this specific order was chosen so the brothers would not suspect the official already knew where the missing goblet was hidden. Had he gone straight to the youngest, it would have immediately looked like a setup. The official knew their exact ages from the previous banquet, where Joseph had seated them according to their birth order [רד״ק]. Additionally, starting the search with the eldest brother was simply a matter of basic politeness and respect [ביאור שטיינזלץ].
The careful search raises a logical question: why did the brothers not defend themselves by pointing out that just as their money had been mysteriously returned to their sacks, the goblet must have been planted there as well? One approach explains that finding extra money in a sack is not enough to prove a crime, since merchants naturally carry large amounts of cash. Therefore, the accusation had to center entirely on the goblet [בכור שור, חזקוני]. Another perspective highlights the official's clever tactics. He conducted the search with his own hands rather than letting the brothers unpack their bags. By pulling out only the goblet and completely ignoring the money, he shocked the brothers so deeply that they did not even notice the cash. This prevented them from realizing the full extent of the scheme and arguing that the entire situation was a setup [אלשיך].
Ultimately, the goblet is discovered in the sack belonging to Benjamin, whose very name marks him as the son of Jacob's right hand, the one upon whom the elderly father leaned [שפתי כהן]. The brothers reacted harshly to the discovery. They shamed Benjamin, calling him a thief and the son of a thief—a painful reference to his mother Rachel stealing her father's idols—and they struck him on the shoulders.
However, great spiritual reward grew from this deep humiliation. Because Benjamin was falsely accused and unjustly beaten on his shoulders, he later earned the privilege of having the Divine Presence rest in his tribal territory, with the Temple built exactly between his borders, resting upon his shoulders. Furthermore, he merited having Mordecai descend from his line. Mordecai would later tear his clothes to save the Jewish people, serving as a spiritual compensation for Benjamin, who was forced to tear his garments unjustly. The rest of the brothers tearing their clothes in grief was actually a measure-for-measure punishment for the pain they caused their father Jacob, which had made him tear his own clothes years earlier. Finally, the official who managed the search and caused all this sorrow was Joseph's son, Manasseh. Because of his direct involvement in tearing the family apart in that moment, he too faced a measure-for-measure consequence: his future tribal land was torn in half, with one part settling in the land of Canaan and the other across the Jordan River [רבנו בחיי].