Primary sourceLetterc. 446
Letter 14 to Anastasius of Thessalonica
Leo I · c. 446
A letter from Pope Leo I setting out a hierarchical model of the Church centered on the authority of Peter's see.
This letter is Leo's own effort to assert papal control over bishops, revealing his view of Church governance.
About this source
What it is
This letter was written by Pope Leo I around 446 to Anastasius, bishop of Thessalonica, who acted as a papal representative overseeing churches in the region.
Why it matters
In the letter, Leo criticizes Anastasius for overstepping his authority and insists that final decisions about Church matters must flow back to Rome, the seat established by the apostle Peter. It shows how Leo worked to centralize control over bishops across a wide territory and strengthen the structure of papal authority.
Look closer
- What does this letter reveal about tensions between local church leaders and the pope in Rome?
- How does Leo use the authority of Peter to support his argument?
- What might have happened if bishops like Anastasius had ignored letters like this one?
This letter is part of the curated material that grounds the AI version of Pope Leo I on Humy.ai — when students ask about related events, the AI can quote it and cite it.
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