structural:scholar_edition
Relationship with bishops of other cities

It was not until 440 that Leo the Great more clearly articulated the extension of papal authority as doctrine, promulgating in edicts and in councils his right to exert "the full range of apostolic powers that Jesus had first bestowed on the apostle Peter". It was at the Ecumenical Council of Chalcedon in 451 that Leo I (through his emissaries) stated that he was "speaking with the voice of Peter". At this same Council, an attempt at compromise was made when the bishop of Constantinople was given a primacy of honour only second to that of the bishop of Rome, because "Constantinople is the New Rome". Roman papal authorities rejected this language since it did not clearly recognize Rome's claim to juridical authority over the other churches.