Genesis 44:4

And when they were gone out of the city, and not yet far off, Joseph said unto his steward, Up, follow after the men; and when thou dost overtake them (he was to pursue until he did overtake them), say unto them, Wherefore have ye rewarded evil for good? Having been received and feasted by Joseph in such a royal manner, had they been so mean and treacherous as to become guilty of theft? The haste was necessary lest some one of the brothers open his sack and they all return of their own free will.