After Joseph and his brothers reunited, he instructed them on how to present themselves to Pharaoh, knowing that would bring the best results for his brothers,
Then Joseph said to his brothers and to his father’s household, “I will go up and tell Pharaoh, and say to him, ‘My brothers and those of my father’s house, who were in the land of Canaan, have come to me. And the men are shepherds, for their occupation has been to feed livestock; and they have brought their flocks, their herds, and all that they have.’ So it shall be, when Pharaoh calls you and says, ‘What is your occupation?’ that you shall say, ‘Your servants’ occupation has been with livestock from our youth even till now, both we and also our fathers,’ that you may dwell in the land of Goshen; for every shepherd is an abomination to the Egyptians” (Genesis 46.31–34).
They listened to him because he knew the situation. He had lived there for twenty-two years, and had gained a position of prominence and power. He knew of what he spoke, giving him credibility in the eyes of his brothers.