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 ters of the Church to add nothing to what had been received. But because many deviate into error, forming new ways to themselves, it becomes necessary to oppose them by fresh statements of truth, and by just means to repel their inventions, not as if religion necessarily demanded such aids, but 'because they are efficacious against the inroads of error.” Then apostrophising Marcian, they entreat him to “protect the Faith of him (Leo) by whom the Council had been so signally benefitted ;” and they close their address by a list of passages from the Greek and Latin Fathers, in proof, that envy alone had attempted to depreciate the epistle of Leo. Ibid. T. iv. p. 821, 828.

These four Councils were celebrated in the East, where the errors, which they combated, had arisen ; but delegates from the Roman See assisted at them, and their decisions, when canonically presented, were accepted by the Western Churches; not as new articles, but as agreeing with what, in the sum of doctrine, they had before implicitly believed, but which, till error called for refutation, had not been thus explicitly expounded.