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And you remember one, Galahad, who on Pentecost, lo, four hundred fifty years and some after the life lived by Jesus, did also seize according to legend a sword from a stone floating in the water and thereby was self-proclaimed as the one who would sit in the perilous seat--the seat [whose occupant] would hold the balance for the Christ incarnate as chief disciple.
So his name was written and so he was the son of Launcelot. So he came, the Son of the Father, in a mission of Christhood. He saw the Grail because he himself was seen and known of the Grail. Others sought after it and they sought their own sense of the Grail, a personal sense of freedom, the way that they were wont to go. Each one’s conception of the Grail was his very own, almost an anthropomorphic image of God himself.
You remember according to the legend that it was Gawain who betrayed King Arthur. For without subjecting his vow to his king he pronounced the vow within the great hall and therefore made it binding that he would go forth in quest of the Holy Grail. And others bound their vows, hundred fifty and more, and therefore the king did weep and the queen did weep and prophesied correctly that they would not find the Grail and that Camelot would come to naught.
It was an idolatrous sense of self and of the Grail itself and therefore the witness of the Sangreal was not to them. It was of course given again and again. The few worthy knights, Parsifal and Bors, beheld it also. But precious hearts, those who went after that which they themselves did not contain, those who were not called to behold the immaculate vessel--they, precious hearts, deserted the mighty work of the ages and failed to acknowledge in king and in queen the very presence of the Grail itself.
Why, the Community of the Holy Spirit is Grail and every individual within it is Grail!   -Maha Chohan:  6-7-1981 at San Francisco via Messenger ECP, see http://tsl.thruhere.net/pentecost.html