Genesis 42:6, 23, 27

Now Joseph was governor over Egypt. He was the one who sold the grain to people who came to buy it. So Joseph’s brothers came to him and bowed facedown on the ground before him.

When Joseph talked to his brothers, he used an interpreter, so they did not know that Joseph understood what they were saying.

When they stopped for the night, one of the brothers opened his sack to get food for his donkey. Then he saw his money in the top of the sack.