What does Genesis 42:35 mean?

When they started emptying their sacks, each of them found his own bag of money right there in his sack. When they and their father saw the money, they were all scared. Genesis 42:35 - Modern Text Bible

(The brothers discover the money they paid for grain has been returned, which makes them afraid. They worry this will look like they stole it, and it adds to their anxiety about their situation in Egypt.)