Revelation Necessary.--Adam knew all about the law of sacrifice--knew all about it in the spirit; for he was one of those who had sat in the eternal councils, where the plan of salvation was framed, and the choice made of a Redeemer and Savior. He helped to form that plan, and to choose the One who would put it into effect. Adam knew all about the Lamb of God, slain in theory from the foundation of the world, and yet to be slain literally upon the earth, an event symbolized by the sacrifice that he was in the very act of offering, perhaps, when the angel accosted him. But he had forgotten it all, so great is the change that comes over the spirit in passing from pre-mortal into mortal conditions. Hence the necessity of such a visitation, to enlighten him. Hence, also, the necessity of revelation by the Holy Ghost, the Comforter, bringing things past to remembrance, showing things to come. The Gospel's Introduction.--The introduction of the Gospel is thus narrated: "And the Lord God called upon men by the Holy Ghost everywhere and commanded them that they should repent."--(Moses 5:14.) * * * * * * * * * * * "And he called upon our father Adam by his own voice, saying: I am God; I made the world, and men before they were in the flesh. "And he also said unto him: If thou wilt turn unto me, and hearken unto my voice, and believe, and repent of all thy transgressions, and be baptized, even in water, in the name of mine Only Begotten Son, who is full of grace and truth, which is Jesus Christ, the only name which shall be given under heaven whereby salvation shall come unto the children of men, ye shall receive the gift of the Holy Ghost; asking all things in His name, and whatsoever ye shall ask, it shall be given you. * * * * * * * * * * * "And now, behold, I say unto you: This is the plan of salvation unto all men, through the blood of mine Only Begotten, who shall come in the meridian of time. * * * * * * * * * * * "And it came to pass, when the Lord had spoken with Adam, our father, that Adam cried unto the Lord, and he was caught away by the Spirit of the Lord, and was carried down into the water, and was laid under the water, and was brought forth out of the water. "And thus he was baptized, and the Spirit of God descended upon him, and thus he was born of the Spirit, and became quickened in the inner man. "And he heard a voice out of heaven, saying: Thou art baptized with fire, and with the Holy Ghost."--(Moses 6:51, 52, 62, 64-66.) * * * * * * * * * * * "And thus the Gospel began to be preached, from the beginning, being declared by holy angels sent forth from the presence of God, and by his own voice, and by the gift of the Holy Ghost. "And thus all things were confirmed unto Adam, by an holy ordinance, and the Gospel preached, and a decree sent forth, that it should be in the world, until the end thereof; and thus it was. Amen."--(Moses 5:58, 59.)