Fifth, that the power by which he was cast out, was by a certain power or Priesthood which had been conferred by God on His Only Begotten; for he said, "By the power of mine Only Begotten I caused that he should be cast down." Sixth, that being cast down and becoming Satan, "even the devil, the father of lies," his office was to deceive and to blind men; as it is stated, "to deceive, and to blind men, and to lead them captive at his will even as many as would not hearken unto my voice." CHAPTER XII. Abraham, Isaac and Jacob--Sacrifices Offered by Them--Abraham and the Gospel Covenant--Extracts from the Book of Abraham and the Writings of Paul. We will now return to Abraham, who is denominated the Father of the Faithful, and who, as we have before seen, was a contemporary of Melchizedek. The testimony in the Bible is direct and explicit that Abraham fulfilled the law requiring the offering of sacrifices, and furthermore was in possession of the principles of the Gospel and understood the saving value of the atonement. In the historical narrative of the Book of Genesis, we have numerous testimonies that Abraham offered up sacrifices, in connection with his worship of the Almighty. For instance, it is written: "And Abram passed through the land unto the place of Sichem, unto the plain of Moreh. And the Canaanite was then in the land. And the Lord appeared unto Abram, and said, Unto thy seed will I give this land; and there builded he an altar unto the Lord, who appeared unto him. And he removed from thence unto a mountain on the east of Beth-el, and pitched his tent, having Beth-el on the west, and Hai on the east: and there he builded an altar unto the Lord, and called upon the name of the Lord."--Gen., xii, 6-8. In the next chapter we are told that Abraham "went on his journeys from the south even to Beth-el, unto the place where his tent had been at the beginning, between Beth-el and Hai; unto the place of the altar, which he had made there at the first: and there Abram called on the name of the Lord."--Gen., xiii, 3, 4. And afterwards he removed his "tent, and came and dwelt in the plain of Mamre, which is in Hebron, and built there an altar unto the Lord."--Gen., xiii, 18. The Book of Abraham gives some further details on these matters. The Patriarch therein states: