That subject is the origin of the Gospels.
Putting it 100's of years later than first possible moment would sure get a rise out of some Christians because they swear it all passed by about 100AD. lol I fail to see how the history listed below could ever come to mean that there were no writings before that time in question 300+AD
(from a previous link)
"The general rules to be included in the later canons were:
- It had to be written or sponsored by an apostle.
- It had to have orthodox content.
- It had to be publically used by a prominent church or a majority of churches.
Some books which appeared to meet these rules were later dropped when proved to be forgeries, such as the
Acts of Paul.
Approximate dating of the development of the New Testament: AD 200AD 250AD 300AD 400
Muratorian Canon (200AD)
Four Gospels
Acts
Pauls Letters: Romans, I & II Cor., Gal., Eph., Phil., Col. I & II Thess., I & II Tim., Titus, Philemon
James
I & II John
Jude
Revelation of John
Revelation of Peter
Wisdom of Solomin
for private study:
Shepherd of Hermas
Origen's collection (250AD)
Four Gospels
Acts
Pauls Letters: Romans, I & II Cor., Gal., Eph., Phil., Col. I & II Thess., I & II Tim., Titus, Philemon
I Peter
I John
Revelation of John
disputed:
Hebrews
James
II Peter
II & III John
Jude
Shepherd of Hermas
Letter of Barnabas
Teaching of Twelve (Didache)
Gospel of the Hebrews
Eusebius's collection (300AD)
Four Gospels
Acts
Pauls Letters: Romans, I & II Cor., Gal., Eph., Phil., Col. I & II Thess., I & II Tim., Titus, Philemon
I Peter
I John
Revelation of John
disputed:
Hebrews
James
II Peter
II & III John
Jude
Purposely excluded: Shepherd of Hermas
Letter of Barnabas
Teaching of Twelve (Didache)
Gospel of the Hebrews
Revelation of Peter
Acts of Peter
Council of Carthage (400AD)
Four Gospels
Acts
Pauls Letters: Romans, I & II Cor., Gal., Eph., Phil., Col. I & II Thess., I & II Tim., Titus, Philemon
Hebrews
James
I & II Peter
I, II, & III John
Revelation of John
Would that also include which Gospel of John if in 350AD they had 350 copies all from various dates in that time-frame? How would they decide which of two minor variations was the correct one.
What would you call 'concrete proof'? One trumpet has 1/3 of mankind die in 1,110 days. If you use 6.66 billion that would be 20million killed each and every day for over 3 full years, would that be proof?