Joseph ordered his magic astrolabe to be brought to him, whereby he knew all things that happen, and he said unto Benjamin, "I have heard that the Hebrews are acquainted with all wisdom, but dost thou know aught of this?" Benjamin answered, "Thy servant also is skilled in all wisdom, which my father hath taught me." He then looked upon the astrolabe, and to his great astonishment he discovered by the aid of it that he who was sitting upon the throne before him was his brother Joseph. Noticing Benjamin's amazement, Joseph asked him, "What hast thou seen, and why art thou astonished?" Benjamin said, "I can see by this that Joseph my brother sitteth here before me upon the throne." And Joseph said: "I am Joseph thy brother! Reveal not the thing unto our brethren. I will send thee with them when they go away, and I will command them to be brought back again into the city, and I will take thee away from them. If they risk their lives and fight for thee, then shall I know that they have repented of what they did unto me, and I will make myself known unto them. But if they forsake thee, I will keep thee, that thou shouldst remain with me. They shall go away, and I will not make myself known unto them."[252] Then Joseph inquired of Benjamin what his brethren had told their father after they had sold him into slavery, and he heard the story of the coat dipped in the blood of a kid of the goats. "Yes, brother," spoke Joseph, "when they had stripped me of my coat, they handed me over to the Ishmaelites, who tied an apron around my waist, scourged me, and bade me run off. But a lion attacked the one that beat me, and killed him, and his companions were alarmed, and they sold me to other people."[253] Dismissed by Joseph with kind words, his brethren started on their homeward journey as soon as the morning was light, for it is a good rule to "leave a city after sunrise, and enter a city before sundown."[254] Besides, Joseph had a specific reason for not letting his brethren depart from the city during the night. He feared an encounter between them and his servants, and that his men might get the worst of it, for the sons of Jacob were like the wild beasts, which have the upper hand at night. THE THIEF CAUGHT