We are all sons of one man. Your servants are honest men, not spies.”
We may well wonder that Joseph, during the twenty years that he had now been in Egypt, especially during the last seven years that he had been in power there, never sent to his father to acquaint him with his circumstances; nay, it is strange that he who so often went throughout all the land of Egypt (Gen 41:45, Gen 41:46) never made an excursion...
Commenting on Genesis 42:7-20
And they said, thy servants are twelve brethren,.... Or rather, "were twelve", since one afterwards is said not to be: the sons of one man in the land of Canaan; of Jacob, who dwelt there; this is said with the same view as before, to show the improbability of their being spies: and, behold, the youngest is this day with our father: meaning Benjamin, whom...
We are all one man's sons - We do not belong to different tribes, and it is not likely that one family would make a hostile attempt upon a whole kingdom. This seems to be the very ground that Joseph took, viz., that they were persons belonging to different tribes.