Arcano Divinae – Encyclical to All the Bishops of the Churches of the Eastern Rite Not in Communion With the Apostolic See (Pius IX – Sep 8, 1868) Arcano Divinae – Encyclical to All the Bishops of the Churches of the Eastern Rite Not in Communion With the Apostolic See (Pius IX – Sep. 8, 1868)
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