Quote:

....The First Council of Nicaea took texts that were already hundreds of years old and declared them as either in or out of their official Bible. ...



There is no evidence that any biblical canon was discussed at this Council, (only ecclesiastical ground rules and Christological issues).
The declaration you mention may have been a notion Voltaire came up with in the 1700's.

The first complete list of the texts included in the current NT was produced by Athanasius of Alexandria in the mid-360's, several decades after the council.
The first actual biblical canon may (or may not) have been formulated in the early 390's at the Synod (greek for meeting or congregation) of Hippo Regius (in Algeria).
Obviously a work in progress.

Bedouin. Blessed are those eyes that have seen more roads than any man! (Homer).