Genesis 42:35

And it came to pass as they emptied their sacks, that, behold, every man's bundle of money was in his sack: and when both they and their father saw the bundles of money, they were afraid.

As they emptied their sacks. It appears that they had been silent about the money discovery at the resting-place, as their father might have blamed them for not instantly returning with it. However innocent they knew themselves to be, it was universally felt to be an unhappy circumstance, which might bring them into new and greater perils.