God created the canon of Scripture. The Jews first and then Christians recognized the voice of the Master in certain writings and not in others. The Christians then collected these books recognized for their inspiration and made vast numbers of copies. The Canon was in use long before Hippo met and "Voted" on the canon. The church doesn't get to decide the canon. She recognizes what writings are canonical.
Theologically, I think that is correct, in that the canon is inspired, although there are some legitimate differences in opinion on what constitutes canonical scripture and what books are canon, but certainly there is ecumenical consensus on the majority of Scripture.
Now, like with the authors of Scripture being inspired, I think the redactors of the canon, for example, St. Irenaeus of Lyons, who insisted on there being four legitimate Gospels and only four, Matthew, Mark, Luke and John, and your own beloved St. Athanasius who fought Arianism
contra mundum, who also, in addition to writing a wonderful biography of St. Anthony the Great and the definitive guide
On The Incarnation which explains the Christian doctrine versus the Arian doctrine, also gave us the 27 book New Testament canon in his 39th Paschal Encyclical (which he sent to the bishops over whom he was the Metropolitan each year to advise them when to celebrate Easter), in the late 360s, and this canon, which became the standard in the Church of Alexandria, was soon adopted by the Church in Rome, and then in Antioch, Constantinople and Jerusalem.
