The Schism Over Leaven

Where we are on the timeline

After Transubstantiation And The Preservation Of The Accidents, the Eucharistic loaf becomes a point of conflict between East and West. The dispute is not only about bread, but bread is one visible place where the break hardens.

This chapter keeps the claim modest.

The textual claim is strong: Greek and Latin Christians argued over whether eucharistic bread should be leavened. The historical claim is moderate: the azymes controversy was one strand in the 1054 crisis, not the single cause. The metabolic claim is indirect: both sides assumed wheat bread as the material field of the argument.

Sections

1. Azymes At The Altar
2. Not Bread Alone In 1054
3. Leaven As Fullness
4. The Wheat Beneath The Dispute

Cross Links

• The Bread He Took begins the sacramental bread trail.
• Doctrine Around The Loaf shows how bread became doctrinal material.
• Wheat With Gluten names the later pressure hidden beneath this older dispute.