Genesis 44:11-15

Then they speedily took down every man his sack to the ground, and opened every man his sack.

And he searched, and began at the eldest, and left at the youngest: and the cup was found in Benjamin’s sack.

Then they rent their clothes, and laded every man his ass, and returned to the city.

And Judah and his brethren came to Joseph’s house; for he was yet there: and they fell before him on the ground.

And Joseph said unto them, What deed is this that ye have done? wot ye not that such a man as I can certainly divine?