The Henoticon: An Act of Union of Constantinople/Istanbul (AD 482)
Bishop Acacius wrote a document called the Henoticon that was officially issued by the emperor Zeno in 482. The document was intended to help reconcile the supporters and opponents of the Chalcedon Creed. The Henoticon document endorsed the final version of the Nicene Creed, condemned the teaching of Nestorius and Eutyches, and approved Cyril’s Twelve Anathemas, but avoided any statement as to whether Jesus Christ had one or two natures. However, in the end, the Henoticon did not satisfy either side, and it failed in its goal to bring about church unity. Acacius died in 489.