On the Eucharist

John Wycliffe's treatise on the Eucharist emerged from his deepening theological confrontation with what he saw as the institutional corruptions of the late medieval Church. Written in 1380, the work represents Wycliffe's most sustained attack on the doctrine of transubstantiation, which had been officially promulgated at the Fourth Lateran Council in 1215. The Oxford theologian composed this Latin treatise as papal authority faced mounting criticism and as his own views on ecclesiastical reform had hardened into more radical positions.

Wycliffe systematically dismantles the scholastic understanding of the Eucharist, arguing that the bread and wine remain substantially unchanged while serving as signs or figures of Christ's body and blood. He contends that the Church's teaching on transubstantiation lacks biblical foundation and represents a dangerous departure from apostolic practice. The treatise employs rigorous philosophical analysis, drawing on his background in nominalist thought, to argue that accidents cannot exist without substances—a direct challenge to Aquinian sacramental theology. Wycliffe insists that the true presence of Christ exists spiritually for the faithful communicant, but rejects the notion that the elements undergo substantial transformation. His argument extends beyond sacramental theology to encompass broader questions about ecclesiastical authority, priestly power, and the relationship between Scripture and tradition.

This work proved theologically explosive, contributing directly to Wycliffe's condemnation by ecclesiastical authorities and influencing later reformers including Jan Hus. The treatise's arguments would resurface prominently in sixteenth-century Protestant theology, particularly in Reformed traditions that embraced symbolic or spiritual understandings of the Lord's Supper. Wycliffe's rigorous scriptural methodology and his willingness to challenge established doctrine on biblical grounds established patterns that would define later reformation movements.

Who should read this: Scholars of late medieval theology and reformation history will find this essential for understanding pre-Protestant reform movements. Those interested in the development of Eucharistic theology and the philosophical foundations of sacramental debate should engage this work, though readers unfamiliar with scholastic theological method may find its technical argumentation challenging.