Genesis 42:21-23

Then they said to one another, “In truth we are guilty concerning our brother, in that we saw the distress of his soul, when he begged us and we did not listen. That is why this distress has come upon us.” And Reuben answered them, “Did I not tell you not to sin against the boy? But you did not listen. So now there comes a reckoning for his blood.” They did not know that Joseph understood them, for there was an interpreter between them.