Genesis 42:6, 23, 27

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

And they knew not that Joseph understood them; for he spake unto them by an interpreter.

And as one of them opened his sack to give his ass provender in the inn, he espied his money; for, behold, it was in his sack's mouth.