But in any case, the whole context is accurately and strongly Egyptian. Was there any point in the history of Israel, down to an impossibly late date, except the time of Moses, at which Jewish writers were so familiar with Egypt as to have been capable of producing so true a picture? The lessons of this incident are plain. First stands out, clear and full, the witness it bears to God's faithfulness, and to His sovereign sway over all events. What are all the persons concerned in the narrative but unconscious instruments of His? The fierce brothers, the unconcerned slave-dealers, Potiphar, his wife, the prisoners, Pharaoh, are so many links in a chain; but they are also men, and therefore free to act, and guilty if acting wrongly. Men execute God's purposes, even when unconscious or rebellious, but are responsible, and often punished, for the acts which He uses to effect His designs. Joseph's thirteen years of trial, crowned with sudden prosperity, may read all of us, and especially young men and women, a lesson of patience. Many of us have to fight our way through analogous difficulties at the outset of our career; and we are apt to lose heart and get restive when success seems slow to come, and one hindrance after another blocks our road. But hindrances are helps. If one of Joseph's misfortunes had been omitted, his good fortune would never have come. If his brethren had not hated him, if he had not been sold, if he had not been imprisoned, he would never have ruled Egypt. Not one thread in the tapestry could have been withdrawn without spoiling the pattern. We cannot afford to lose one of our sorrows or trials. There would be no summer unless winter had gone before. There is a bud or a fruit for every snowflake, and a bird's song for every howl of the storm.