St. John I, Pope and Martyr (Feast day – May 18) A native of Tuscany in Italy, John was elected Pope while he was still an archdeacon upon the death of Pope Hormisdas in 523. At that time, the ruler of Italy was Theodoric the Goth who subscribed to the Arian brand of Christianity, but had tolerated and even favored his Catholic subjects during the early part of his reign. However, about the time of St. John’s accession to the Papacy, Theodoric’s policy underwent a drastic change as a result of two events: the treasonable (in the sovereign’s view) correspondence between ranking members of the Roman Senate and Constantinople and the severe edict against heretics enacted by the emperor Justin I, who was the first Catholic on the Byzantine throne in fifty years. Spurred on by the appeals of Eastern Arians, Theodoric threatened to wage war against Justin but ultimately decided to negotiate with him through a delegation of five Bishops and four senators. At its head he named Pope John – much against the latter’s wishes. Little is known for certain about the nature of the message which the Pope bore and the manner in which he carried out his mission.
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I’ve never dug into the history of the Arian heresy. I mean, I know a couple of the saints and the theological problem, but I’m lost in all the twists and turns of how it played out.