Genesis 42:8

they did not recognize him: This was because Joseph was now a grown man, not a boy. He did not have a beard, wore Egyptian clothes, and was in an unexpected position of power. He spoke to them through an interpreter (42:23).

Joseph saw his brethren, and he knew them, . . . but they knew not him--This is not strange. They were full-grown men--he was but a lad at parting. They were in their usual garb--he was in his official robes. They never dreamt of him as governor of Egypt, while he had been expecting them. They had but one face; he had ten persons to judge by.

made himself strange unto them, and spake roughly--It would be an injustice to Joseph's character to suppose that this stern manner was prompted by any vindictive feelings--he never indulged any resentment against others who had injured him. But he spoke in the authoritative tone of the governor in order to elicit some much-longed-for information respecting the state of his father's family, as well as to bring his brethren, by their own humiliation and distress, to a sense of the evils they had done to him.

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 his family might be accomplished. When Joseph's brethren came, he knew them by many a satisfactory token, but they knew not him, little thinking to find him there, Gen 42:8. He remembered the dreams (Gen 42:9), but they had forgotten them. The laying up of God's oracles in our hearts will be of excellent use to us in all our conduct. Joseph had an eye to his dreams, which he knew to be divine, in his carriage towards his brethren, and aimed at the accomplishment of them and the bringing of his brethren to repentance for their former sins; and both these points were gained.
I. He showed himself very rigorous and harsh with them. The very manner of his speaking, considering the post he was in, was enough to frighten them; for he spoke roughly to them, Gen 42:7. He charged them with bad designs against the government (Gen 42:9), treated them as dangerous persons, saying, You are spies, and protesting by the life of Pharaoh that they were so, Gen 42:16. Some make this an oath, others make it no more than a vehement asseveration, like that, as thy soul liveth; however it was more than yea, yea, and nay, nay, and therefore came of evil. Note, Bad words are soon learned by converse with those that use them, but not so soon unlearned. Joseph, by being much at court, got the courtier's oath, By the life of Pharaoh, perhaps designing hereby to confirm his brethren in their belief that he was an Egyptian, and not an Israelite. They knew this was not the language of a son of Abraham. When Peter would prove himself no disciple of Christ, he cursed and swore. Now why was Joseph thus hard upon his brethren? We may be sure it was not from a spirit of revenge, that he might now trample upon those who had formerly trampled upon him; he was not a man of that temper. But, 1. It was to enrich his own dreams, and complete the accomplishment of them. 2. It was to bring them to repentance. 3. It was to get out of them an account of the state of their family, which he longed to know: they would have discovered him if he had asked as a friend, therefore he asks as a judge. Not seeing his brother Benjamin with them, perhaps he began to suspect that they had made away with him too, and therefore gives them occasion to speak of their father and brother. Note, God in his providence sometimes seems harsh with those he loves, and speaks roughly to those for whom yet he has great mercy in store.
II. They, hereupon, were very submissive. They spoke to him with all the respect imaginable: Nay, my lord (Gen 42:10) - a great change since they said, Behold, this dreamer comes. They very modestly deny the charge: We are no spies. They tell him their business, that they came to buy food, a justifiable errand, and the same that many strangers came to Egypt upon at this time. They undertake to give a particular account of themselves and their family (Gen 42:13), and this was what they wanted.
III. He clapped them all up in prison for three days, Gen 42:17. Thus God deals with the souls he designs for special comfort and honour; he first humbles them, and terrifies them, and brings them under a spirit of bondage, and then binds up their wounds by the Spirit of adoption.
IV. He concluded with them, at last, that one of them should be left as a hostage, and the rest should go home and fetch Benjamin. It was a very encouraging word he said to them (Gen 42:18): I fear God; as if he had said, "You may assure yourselves I will do you no wrong; I dare not, for I know that, high as I am, there is one higher than I." Note, With those that fear God we have reason to expect fair dealing. The fear of God will be a check upon those that are in power, to restrain them from abusing their power to oppression and tyranny. Those that have no one else to stand in awe of ought to stand in awe of their own consciences. See Neh 5:15, So did not I, because of the fear of God.

He made himself strange unto them. It may be asked for what purpose Joseph thus tormented his brethren with threats and with terror. For if he was actuated by a sense of the injury received from them, he cannot be acquitted of the desire of revenge. It is, however, probable, that he was impelled neither by anger nor a thirst of vengeance, but that he was induced by two just causes to act as he did. For he both desired to regain his brother Benjamin, and wished to ascertain, -- as if by putting them to the torture, -- what was in their mind, whether they repented or not; and, in short, what had been their course of life since he had seen them last. For, had he made himself known at the first interview, it was to be feared lest they, keeping their father out of sight, and wishing to cast a vail over the detestable wickedness which they had committed, should only increase it by a new crime. There lurked, also, a not unreasonable suspicion concerning his brother Benjamin, lest they should attempt something perfidious and cruel against him. It was therefore important that they should be more thoroughly sifted; so that Joseph, being fully informed of the state of his father's house, might take his measures according to circumstances; and also, that previous to pardon, some punishment might be inflicted which would lead them more carefully to reflect upon the atrocity of their crime. For whereas he afterwards showed himself to be placable and humane; this did not arise from the fact, that his anger being assuaged, he became, by degrees, inclined to compassion; but rather, as Moses elsewhere subjoins, that he sought retirement, because he could no longer refrain himself; herein intimating at the same time, that Joseph had forcibly repressed his tears so long as he retained a severe aspect; and, therefore, that he had felt throughout the same affection of pity towards them. And it appears that a special impulse moved him to this whole course of action. For it was no common thing, that Joseph, beholding so many authors of his calamities, was neither angry nor changed in his manner, nor broke out into reproaches; but was composed both in his countenance and his speech, as if he had long meditated at leisure, respecting the course he would pursue. But it may be inquired again, whether his dissimulation, which was joined with a falsehood, is not to be blamed; for we know how pleasing integrity is to God, and how strictly he prohibits his own people from deceit and falsehoods. Whether God governed his servant by some special movement, to depart without fault, from the common rule of action, I know not; seeing that the faithful may sometimes piously do things which cannot lawfully be drawn into a precedent. Of this, however, in considering the acts of the holy fathers, we must always beware; lest they should lead us away from that law which the Lord prescribes to all in common. By the general command of God, we must all cultivate sincerity. That Joseph feigned something different from the truth, affords no pretext to excuse us if we attempt anything of the same kind. For, though a liberty granted by privilege would be pardoned, yet if any one, relying on a private example, does not scruple to subvert the law of God, so as to give himself license to do what is therein forbidden, he shall justly suffer the punishment of his audacity. And yet I do not think that we ought to be very anxious to excuse Joseph, because it is probable that he suffered something from human infirmity, which God forgave him; for by Divine mercy alone could that dissimulation, which in itself was not without fault, escape condemnation.

Joseph was the governor - שליט shallit, an intendant, a protector, from שלט skalat, to be over as a protector; hence שלטים shelatim, shields, or arms for protection and defense, Sa2 8:7; and שלטון shilton, power and authority, Ecc 8:4, Ecc 8:8; and hence the Arabic sultan, a lord, prince, or king, from salata, he obtained and exercised dominion, he ruled. Was it not from this very circumstance, Joseph being shallit, that all the Mohammedan governors of Egypt, etc., took the title of sultan? Bowed down themselves before him - Thus fulfilling the prophetic dream, Gen 37:7, Gen 37:8, which they had taken every precaution to render null and void. But there is neither might nor counsel against the Lord.

And Joseph knew his brethren, but they knew not him. It being about twenty two years since they saw him, and then he was young, and his beard not grown, as now it was; and besides, he was clothed as a prince, and spoke the Egyptian language; and being in such great grandeur and splendour, and in such power and authority, and having such a retinue attending him, they never once thought of him, whom they supposed might be dead, having never heard of him all this time; or, however, it could not come into their minds, that he whom they sold for a slave could ever be governor of the land of Egypt.

Because his visage was much altered by his beard, and by other things, it being about twenty years since they saw him; and his Egyptian language, and habit, and carriage, together with the great dignity of his place, prevented all suspicions concerninging their brother.

Joseph recognised his brothers at once; but they could not recognise a brother who had not been seen for 20 years, and who, moreover, had not only become thoroughly Egyptianized, but had risen to be a great lord. And he acted as a foreigner (יתנכּר) towards them, speaking harshly, and asking them whence they had come. In Gen 42:7, according to a truly Semitic style of narrative, we have a condensation of what is more circumstantially related in Gen 42:8-17.