Genesis 42:8-12

But Joseph had recognized his brothers, although they did not recognize him.

And Joseph remembered the dreams which he had about them, and he said to them, “You are spies; you have come to look at the undefended parts of our land.”

And they said to him, “No, my lord, but your servants have come to buy food.

We are all sons of one man; we are honest men, your servants are not spies.”

Yet he said to them, “No, but you have come to look at the undefended parts of our land!”