>>664458
He asked Church: "hey, can you give me your Holy Writ in one book?". And Church gave him 50. https://en.wikipedia.org/wiki/Fifty_Bibles_of_Constantine
>>664475
>He convened and precided over the Council of Nicea
Not entirely true. He "called" a council with Papal Legate, Hosius, who was the real deal when it comes to this council, and his presiding over was literally sitting there with "can you guys stop fighting alredy?!"face (and watch over them so they won't kill eachother that almost happened).
>which decided which books were to be concidered divinely inspired and canonical, thus forming the Christian Bible. ( >>664543 )
And this not true, moreover it's lie invented by Voltaire. Council did not spoke about Canon (the closest we get is that Jerome says that it accepted Judith as Scripture but acts of council are lost).
>>664705
>Arguably it was Theodocius II and the Council of Ephesus that really created Roman Catholicism by cementing "veneration" of Mary.
Veneration to Mary is as old as the Church. Read Irenaeus.
>>664550
Athanasius canon is not used by anyone with respect to Old Testament (find me Bible where there is no Esther but Baruch is). And even New, since he give rather strange order of them.