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Council · Today in 451

Council of Chalcedon

Defined Christ as one person in two natures — divine and human, unconfused, unchanged, undivided, unseparated. Pope Leo's Tome was read aloud and accepted.

Figures involved

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Cover of Sermons by Leo the Great
Daily reading

Book of the day

Tome (Letter to Flavian)

Pope Leo I

A reading pick tied to today's figure, quote, era, or event. Leo's letter becomes a central text for Chalcedon and the two-natures formula.

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Today: Council of Chalcedon (451) — Patristic Lineage