How Sir Launcelot was to-fore the door of the chamber wherein the Holy Sangreal was. Then he enforced him mickle to undo the door. Then he listened and heard a voice which sang so sweetly that it seemed none earthly thing; and him thought the voice said: Joy and honour be to the Father of Heaven. Then Launcelot kneeled down to-fore the chamber, for well wist he that there was the Sangreal within that chamber. Then said he: Fair sweet Father, Jesu Christ, if ever I did thing that pleased Thee, Lord for Thy pity never have me not in despite for my sins done aforetime, and that Thou show me something of that I seek. And with that he saw the chamber door open, and there came out a great clearness, that the house was as bright as all the torches of the world had been there.
So came he to the chamber door, and would have entered. And anon a voice said to him: Flee, Launcelot, and enter not, for thou oughtest not to do it; and if thou enter thou shalt for-think it. Then he withdrew him aback right heavy. Then looked he up in the midst of the chamber, and saw a table of silver, and the Holy Vessel, covered with red samite, and many angels about it, whereof one held a candle of wax burning, and the other held a cross, and the ornaments of an altar. And before the Holy Vessel he saw a good man clothed as a priest. And it seemed that he was at the sacring of the mass. And it seemed to Launcelot that above the priest’s hands were three men, whereof the two put the youngest by likeness between the priest’s hands; and so he lift it up right high, and it seemed to show so to the people. And then Launcelot marvelled not a little, ............