After the same manner also he took the cup, and gave unto them saying, `Drink ye all of this: this is my Blood, of the new testament, which is shed for you for the remission of sins: this do in remembrance of me.' He then, the Word of God, being quick and powerful, and, working all things by his might, maketh and transformeth, through his divine operation, the bread and wine of the oblation into his own Body and Blood, by the visitation of the Holy Ghost, for the sanctification and enlightenment of them that with desire partake thereof.
"Faithfully worship, with honour and reverence, the venerable likeness of the features of the Lord, the Word of God, who for our sake was made man, thinking to behold in the Image thy Creator himself. `For the honour of the Image, saith one of the Saints, passeth over to the original.' The original is the thing imaged, and from it cometh the derivation. For when we see the drawing in the Image, in our mind's eye we pass over to the true form of which it is an Image, and devoutly worship the form of him who for our sake was made flesh, not making a god of it, but saluting it as an image of God made flesh, with desire and love of him who for us men emptied himself, and even took the form of a servant. Likewise also for this reason we salute the pictures of his undefiled Mother, and of all the Saints. In the same spirit also faithfully worship and salute the emblem of the life-giving and venerable Cross, for the sake of him that hung thereon in the flesh, for the salvation of our race, Christ the God and Saviour of the world, who gave it to us as the sign of victory over the devil; for the devil trembleth and quaketh at the virtue thereof, and endureth not to behold it. In such doctrines and in such faith shalt thou be baptized, keeping thy faith unwavering and pure of all heresy until thy latest breath. But all teaching and every speech of doctrine contrary to this blameless faith abhor, and consider it an alienation from God. For, as saith the Apostle, `Though we, or an angel from heaven, preach any other gospel unto you than that which we have preached unto you, let him be accursed.' For there is none other Gospel or none other Faith than that which hath been preached by the Apostles, and established by the inspired Fathers at divers Councils, and delivered to the Catholick Church."When Barlaam had thus spoken, and taught the king's son the Creed which was set forth at the Council of Nicaea, he baptized him in the name of the Father, and of the Son, and of the Holy Ghost, in the pool of water which was in his garden. And there came upon him the grace of the Holy Spirit. Then did Barlaam come back to his chamber, and offer the holy Mysteries of the unbloody Sacrifice, and communicate him with the undefiled Mysteries of Christ: and Ioasaph rejoiced in spirit, giving thanks to Christ his God.