In their conversation with Pharaoh the brethren of Joseph made it plain to the Egyptian king that it was not their intention to remain in Egypt forever, it was to be only a temporary dwelling-place.
Then Joseph set Jacob his father before Pharaoh, and when the king saw him, he said to Og, who happened to be with him at that moment, "Seest thou! Thou wast wont to call Abraham a sterile mule, and here is his grandson with a family of seventy persons!" Og would not believe his own eyes, he thought Abraham was standing before him, so close was the resemblance between Jacob and his progenitor. Then Pharaoh asked about Jacob's age, to find out whether he actually was Jacob, and not Abraham. And Jacob said unto Pharaoh, "The days of the years of my pilgrimage are an hundred and thirty years," using the word pilgrimage in reference to life on earth, which the pious regard as a temporary sojourn in alien lands. "Few and evil," he continued, "have been the days of the years of my life. In my youth I had to flee to a strange land on account of my brother Esau, and now, in my old age, I must again go to a strange land, and my days have not attained unto the days of the years of the life of my fathers in the days of their pilgrimage." These words sufficed to convince Pharaoh and Og that the man standing before them was not Abraham, but his grandson.