Genesis 42:6, 23, 27

And Joseph was the governor over the land; he it was that sold to all the people of the land. And Joseph’s brethren came, and bowed down themselves to him with their faces to the earth.

And they knew not that Joseph understood them; for there was an interpreter between them.

And as one of them opened his sack to give his ass provender in the lodging-place, he espied his money; and, behold, it was in the mouth of his sack.