‘And Judah and his brothers came to Joseph's house, and he was still there. And they fell on the ground before him. And Joseph said, “What is this deed that you have done? Do you not realise that such a man as I can indeed divine?”
As in a nightmare the brothers return to the house where they had spent the previous day in such jollity and relief. And hopelessly they abase themselves before him. Any fight has gone out of them.
Judah is mentioned individually because he is the one who has taken responsibility for Benjamin and will be the key player in what follows. But Reuben has fallen into the background and it would seem that for whatever reason Judah is now seen as the leader (compare Genesis 43:3; Genesis 46:28).
Joseph professes to be scandalised, and declares that they must recognise that he is a man who sees through things. He is no ordinary man, he can see what others cannot see. He can ‘divine'. It is possible that he has a small doubt about whether the brothers might be beginning to get suspicious about all the ‘coincidences' and is trying to counter it by explaining how he has been able to act with such accuracy, but he need not have worried. They are far too overwhelmed to even think in those terms.