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In page Council of Chalcedon:

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After the passage of the Canon 28, Rome filed a protest against the reduction of honor given to Antioch and Alexandria. However, fearing that withholding Rome's approval would be interpreted as a rejection of the entire council, in 453 the pope confirmed the council's canons while declaring the 28th null and void. This position would change and later be accepted in 1215 at the Fourth Council of the Lateran.[citation needed]