Genesis 42:6-9

6Now Joseph was the ruler over the land, and he was the one who sold [grain] to all the people of the land; and Joseph’s [half] brothers came and bowed down before him with their faces to the ground.

7When Joseph saw his brothers he recognized them, but [hiding his identity] he treated them as strangers and spoke harshly to them. He said to them, “Where have you come from?” And they said, “From the land of Canaan, to buy food.”

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

9Joseph remembered the dreams he had dreamed about them, and said to them, “You are spies; you have come [with a malicious purpose] to observe the undefended parts of our land.”