Definition of "Athanasius"

Athanasius of Alexandria’s thirty-ninth Festal Letter remains one of the most significant documents in the history of the Christian Bible. Athanasius wrote the letter, which contains the first extant list of precisely the twenty-seven books of the current New Testament canon, in 367 C.E., during the final decade of his life.

2010 January, David Brakke, “A New Fragment of Athanasius’s Thirty-Ninth Festal Letter: Heresy, Apocrypha, and the Canon”, in Harvard Theological Review, volume CIII, № 1, page 47