Jundi-Shapur
The Catholic Church, strongly influenced by the remains of the impulse emanating from Jundi-Shapur, decreed as a dogma at the Eighth Ecumenical Council at Constantinople in AD 869 that men were not to believe in the spirit. … This was because the Church did not desire that everybody should be enlightened about the Mystery of Golgotha, but that it should be kept hidden. In the year AD 869, belief in the spirit was abolished by the Catholic Church.
The dogma then decreed was to the effect that men must not believe in man as spirit, but only as body and soul, the soul possessing certain spiritual qualities. Thus the truth that man is a being of body, soul and spirit was abolished by the Catholic Church, acting directly under the influence of the impulse of Jundi-Shapur. History often presents a different spectacle from the one in which it is presented for the ordinary use of those whom one party or another would like to control.
Through the Mystery of Golgotha, however, man was related more closely to the spirit. Consequently there are two forces in him: the force whereby in his soul he is allied to death, and the force which liberates him from death and leads him inwardly to the spirit.
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When we can experience powerlessness and recovery from it, the benediction of actual relationship with Christ Jesus is vouchsafed to us. For this experience is the recovery of what we experienced in the spiritual world hundreds of years before our birth. We must seek here, on the physical plane, for its mirror-image in the soul. Seek within yourselves and you will discover the powerlessness! Seek, and you will find, after the experience of powerlessness, the redemption from it, the resurrection of the soul to the spirit….
The Christ experience does not consist of the unitary realisation of the Divine, but of the twofold experience of the death in the soul wrought by the body and the resurrection of the soul wrought by the spirit. A man who can say that he feels not only the Divine within him — as mystical theosophists eloquently assert — but can speak of the two experiences — of powerlessness and the resurrection from it — such a man is speaking of the true Christ experience
Rudolf Steiner, How do I find the Christ