Genesis 42:20

He put them all together into custody for three days.

Joseph said to them the third day, “Do this, and live, for I fear God.

If you are honest men, then let one of your brothers be bound in your prison; but you go, carry grain for the famine of your houses.

They said to one another, “We are certainly guilty concerning our brother, in that we saw the distress of his soul, when he begged us, and we wouldn’t listen. Therefore this distress has come upon us.”

Reuben answered them, saying, “Didn’t I tell you, saying, ‘Don’t sin against the child,’ and you wouldn’t listen? Therefore also, behold, his blood is required.”

They didn’t know that Joseph understood them; for there was an interpreter between them.