Genesis 42:6-9

6Now Joseph was governor over the land. He was the one who sold to all the people of the land. And Joseph's brothers came and bowed themselves before him with their faces to the ground.

7Joseph saw his brothers and recognized them, but he treated them like strangers and spoke roughly to them. "Where do you come from?" he said. They said, "From the land of Canaan, to buy food."

8And Joseph recognized his brothers, but they did not recognize him.

9And Joseph remembered the dreams that he had dreamed of them. And he said to them, "You are spies; you have come to see the nakedness of the land."