Genesis 42:19

Send one of you, and let him get your brother, and you shall be bound, that your words may be tested, whether there is truth in you, or else by the life of Pharaoh surely you are spies.”

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.

Bring your youngest brother to me; so will your words be verified, and you won’t die.”

They did so.

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.”