Genesis 44:2

2. And put my cup, the silver cup. It may seem wonderful that, considering his great opulence, Joseph had not rather drunk out of a golden cup. Doubtless, either the moderation of that age was still greater than has since prevailed, and the splendor of it less sumptuous; or else this conduct must be attributed to the moderation of the man, who, in the midst of universal license, yet was contented with a plain and decent, rather than with a magnificent style of living. Unless, perhaps, on account of the excellence of the workmanship, the silver was more valuable than gold: as it is manifest from secular history, that the workmanship has often been more expensive than the material itself. It is, however, probable, that Joseph was sparing in domestic splendor, for the sake of avoiding envy. For unless he had been prudently on his guard, a contention would have arisen between him and the courtiers, resulting from a spirit of emulation. Moreover, he commands the cup to be enclosed in Benjamin’s sack, in order that he might claim him as his own, when convicted of the theft, and might send the rest away: however, he accuses all alike, as if he knew not who among them had committed the crime. And first, he reproves their ingratitude, because, when they had been so kindly received, they made the worst possible return; next, he contends that the crime was inexpiable, because they had stolen what was most valuable to him; namely, the cup in which he was accustomed both to drink and to divine. And he does this through his steward, whom he had not trained to acts of tyranny and violence. Whence I infer, that the steward was not altogether ignorant of his master’s design.