In his Festal Letter for Easter, 367, Bishop Athanasius of Alexandria set to eliminate once and for all the use of certain apocryphal books. "Let no one add to these; let nothing be taken away" is the earliest extant document that specifies our 27 books without qualification.
(The Origin of the Bible: Newly Updated by F. F. Bruce, J. I. Packer, Philip W. Comfort, and Carl F. H. Henry, 2020. The Canon of the New Testament by Milton C. Fisher, Page 74.)
List
- Bishop Athanasius of Alexandria
- Syrian Archbishop Athanasius Samuel