My son shall not go down with you — He plainly intimates a distrust of them, remembering that he never saw Joseph since he had been with them; therefore Benjamin shall not go with you.
Related Commentaries of Genesis 42:38
Genesis 42:38
38 And he said, My son shall not go down with you; for his brother is dead, and he is left alone: if mischief befall him by the way in the which ye go, then shall ye bring down my gray hairs with sorrow to the grave.