Matthew Henry on Genesis 42:7-20
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 to Canaan, to visit his aged father, when he was in the borders of Egypt, that lay next to Canaan. Perhaps it would not have been above three or four days' journey for him in his chariot. It is a probable conjecture that his whole management of himself in this affair was by special direction from Heaven, that the purpose of God concerning Jacob and…
Read the whole note in the consoleJamieson-Fausset-Brown on Genesis 42:9
Ye are spies--This is a suspicion entertained regarding strangers in all Eastern countries down to the present day. Joseph, however, who was well aware that his brethren were not spies, has been charged with cruel dissimulation, with a deliberate violation of what he knew to be the truth, in imputing to them such a character. But it must be remembered that he was sustaining the part of a ruler; and, in fact, acting on the very principle sanctioned by many of the sacred writers, and our Lord Himself, who spoke parables (fictitious stories) to promote a good end.
Adam Clarke on Genesis 42:11
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. Against this particularly they set up their defense, asserting that they all belonged to one family; and it is on the proof of this that Joseph puts them, Gen 42:15, in obliging them to leave one as a hostage, and insisting on their bringing their remaining brother; so that he took exactly the same precautions to detect them as if he had had no acquaintance with them, and had every reason to be suspicious.
John Gill on Genesis 42:11