During the stages of evolution that lead up to and include the Probationary Path, the first division of the spiritual body--the Causal Body--develops rapidly, and enables the man, after death, to rise into the second heaven. After the Second Birth, the birth of the Christ in man, begins the building of the Bliss Body "in the heavens." This is the body of the Christ, developing during the days of His service on earth, and, as it develops, the consciousness of the "Son of God" becomes more and more marked, and the coming union with the Father illuminates the unfolding Spirit. In the Christian Mysteries--as in the ancient Egyptian, Chaldean, and others--there was an outer symbolism which expressed the stages through which the man was passing. He was brought into the chamber of Initiation, and was stretched on the ground with his arms extended, sometimes on a cross of wood, sometimes merely on the stone floor, in the posture of a crucified man. He was then touched with the thyrsus on the heart--the "spear" of the crucifixion--and, leaving the body, he passed into the worlds beyond, the body falling into a deep trance, the death of the crucified. The body was placed in a sarcophagus of stone, and there left, carefully guarded. Meanwhile the man himself was treading first the strange obscure regions called "the heart of the earth," and thereafter the heavenly mount, where he put on the perfected bliss body, now fully organised as a vehicle of consciousness. In that he returned to the body of flesh, to re-animate it. The cross bearing that body, or the entranced and rigid body, if no cross had been used, was lifted out of the sarcophagus and placed on a sloping surface, facing the east, ready for the rising of the sun on the third day. At the moment that the rays of the sun touched the face, the Christ, the perfected Initiate or Master, re-entered the body, glorifying it by the bliss body He was wearing, changing the body of flesh by contact with the body of bliss, giving it new properties, new powers, new capacities, transmuting it into His own likeness. That was the Resurrection of the Christ, and thereafter the body of flesh itself was changed, and took on a new nature. This is why the sun has ever been taken as the symbol of the rising Christ, and why, in Easter hymns, there is constant reference to the rising of the Sun of Righteousness. So also is it written of the triumphant Christ: "I am He that liveth and was dead; and behold, I am alive for evermore, Amen; and have the keys of hell and of death."[251] All the powers of the lower worlds have been taken under the dominion of the Son, who has triumphed gloriously; over Him death no more has power, "He holdeth life and death in His strong hand."[252] He is the risen Christ, the Christ triumphant.