Actually, the Council of Nicaea, June 19, 325 A.D., was called for only one purpose. The Council soundly defeated the heresy of Arianism which sought to teach that God the Father had created Jesus and therefore the Son was not as important, so to speak, as the Father. From the Council came the Nicene Creed, still in use by most branches of Christianity today... "God the Father and God the Son were consubstantial and coeternal and that the Arian belief in a Christ created by and thus inferior to the Father was heretical". Among other things achieved at Nicaea were the agreement on a date to celebrate Easter and a ruling on the Melitian Schism in Egypt. There was no debate or thought of any disagreement on the meaning and validity of New Testament Scripture. The fact of Who and Why the Word (John 1:1) was had already been well established by the powerful testimony of eyewitness and recorded in the Gospels and the early writings of Paul.
While it is true there are minor scribal errors in both the New and Old Testaments, scholars agree they have no affect on clearly understood meaning and the New Testament is found to be 98 percent error free when newer copies are compared to far older copies...
As the reference to apocryphal writings suggests, they were much later in origin and clearly "different" and fanciful in their mythological nature... The Roman Catholic Church includes them as historical reference value...