‘And Judah spoke to him, saying, “The Man did solemnly declare to us, saying, ‘You shall not see my face except your brother be with you.' If you will send our brother with us we will go down and buy you food. But if you will not send him we will not go down, for the Man said to us, ‘You shall not see my face except your brother be with you.' ” '
Judah speaks up for his brothers. It is all right for Jacob, he does not have to face the Man. But they know what he is like and the terror he induces. And they know what he is likely to do with them if they return without Benjamin. There are no circumstances in which they will go unless Benjamin goes with them. They do not want to share Simeon's fate.
The fact that Simeon is not mentioned is deliberate on the part of the writer. He wants his readers to recognise that as far as the family is concerned Simeon's fate is now irrelevant. He has previously been sacrificed to Jacob's obstinacy and obsession with his youngest son.
Reuben takes no part in all this. His father had previously rejected his offer and he has given up. Indeed something appears to have happened to him. Trying circumstances bring leaders to the fore and the reaction to the famine seems to have brought Judah into a position of leadership. He may well have proved the most resilient when everyone else was despairing. Everyone now looks to him.
“See his face.” They will not be able to approach the great man but will instead be arrested.