"The three chapters were the point in question; that is, respecting Theodore of Mopsuestia, Theodoret's writings against Cyril, and the letter of Ibas of Edessa to Maris the Persian. The question was whether that letter had been approved in the Council of Chalcedon. So much was admitted that it had been read there, and that Ibas, after anathematizing Nestorius, had been received by the Council. Some contended that his person only was spared; others that his letter also was approved. Thus inquiry was made at the fifth Council how writings on the faith were wont to be approved in former Councils. The acts of the third and fourth Council, those which we have mentioned above respecting the letter of St. Cyril and of St. Leo, were set forth. Then the holy Council declared--'It is plain, from what has been recited, in what manner the holy Councils are wont to approve what is brought before them. For, great as was the dignity of those holy men who wrote the letters recited, yet they did not approve their letters simply or without inquiry, nor without taking cognisance that they were in all things agreeable to the exposition and doctrine of the holy Fathers, with which they were compared.' But the acts proved that this course was not pursued in the case of the letter of Ibas; they inferred, therefore, most justly, that that letter had not been approved. So, then, it is certain, from the third and fourth Councils, the fifth so declaring and understanding it, that letters approved by the Apostolic See, such as was that of Cyril, or even proceeding from it, as that of Leo, were received by the holy Councils not simply, nor without inquiry." Pope Vigilius afterwards, when consenting to this Council, "acknowledges that the letter of St. Leo was not approved at the Council of Chalcedon until it had been examined and found conformable to the faith of the three preceding Councils; and this avowal is the more important in the mouth of a Pope."[120] "Again, in the same fifth Council the acts against the letter of Nestorius are read, in which the Fathers of Ephesus plainly pronounce, 'that the letter of Nestorius is in no respect agreeable to the faith which was set forth at Nicea.' So this letter also was rejected, not simply, but, as was equitable, after examination; and Ibas condemned, who stated that Nestorius had been rejected by the Council of Ephesus without examination and inquiry.