"What of the bread. The holy sacrament. To rise up in the fires."
It is important to note that Jesus, as the bread of life, is meant to be viewed as 'unleavened' without impurity or influence.
It is 'christ consciousness' that is pure and unalloyed, not influenced by opinion nor 'sophist pharisaical teaching', just like unleavened bread of the Exodus.
The whole reason that the authors of the Gospels coincided the passover with Jesus' death is to parallel the Exodus journey of the Hebrews and the sacrifice of The Lamb of God.
This is also repsented in the Platonic journey of the coprporeal land of the senses to the incorporeal land of the intellect, from the land of wickedness to the land of virtue, etc....
"And when his disciples were come to the other side, they had forgotten to take bread. Then Jesus said unto them, Take heed and beware of the leaven of the Pharisees and of the Sadducees...........How is it that ye do not understand that I spake it not to you concerning bread, that ye should beware of the leaven of the Pharisees and of the Sadducees? Then understood they how that he bade them not beware of the leaven of bread, but of the doctrine of the Pharisees and of the Sadducees."
1 Cor 5:
"Your glorying is not good. Know ye not that a little leaven leaveneth the whole lump? Purge out therefore the old leaven, that ye may be a new lump, as ye are unleavened. For even Christ our passover is sacrificed for us: Therefore let us keep the feast, not with old leaven, neither with the leaven of malice and wickedness; but with the unleavened bread of sincerity and truth."