Joseph made himself strange unto his brethren, and he took his cup in his hand, knocked against it, and said, "By this magic cup I know that ye are spies." They replied, "Thy servants came from Canaan into Egypt for to buy corn." Joseph: "If it be true that ye came hither to buy corn, why is it that each one of you entered the city by a separate gate?"[207] The brethren: "We are ALL the sons of one man in the land of Canaan, and he bade us not enter a city together by the same gate, that we attract not the attention of the people of the place." Unconsciously they had spoken as seers, for the word ALL included Joseph as one of their number.[208] Joseph: "Verily, ye are spies! All the people that come to buy corn return home without delay, but ye have lingered here three days, without making any purchases, and all the time you have been gadding about in the disreputable parts of the city, and only spies are wont to do thus." The brethren: "We thy servants are twelve brethren, the sons of Jacob, the son of Isaac, the son of the Hebrew Abraham. The youngest is this day with our father in Canaan, and one hath disappeared. Him did we look for in this land, and we looked for him even in the disreputable houses." Joseph: "Have ye made search in every other place on earth, and was Egypt the only land left? And if it be true that he is in Egypt, what should a brother of yours be doing in a house of ill-fame, if, indeed, ye are the descendants of Abraham, Isaac, and Jacob?" The brethren: "We did hear that some Ishmaelites stole our brother, and sold him into slavery in Egypt, and as our brother was exceeding fair in form and face, we thought he might have been sold for illicit uses, and therefore we searched even the disreputable houses to find him." Joseph: "You speak deceitful words, when you call yourselves sons of Abraham. By the life of Pharaoh, ye are spies, and you did go from one disreputable house to another that none might discover you."[209] The expression "by the life of Pharaoh" might have betrayed Joseph's real feeling to his brethren, had they but known his habit of taking this oath only when he meant to avoid keeping his word later.[210] Joseph continued to speak to his brethren: "Let us suppose you should discover your brother serving as a slave, and his master should demand a high sum for his ransom, would you pay it?" The brethren: "Yes!" Joseph: "But suppose his master should refuse to surrender him for any price in the world, what would you do?" The brethren: "If he yields not our brother to us, we will kill the master, and carry off our brother."