Ok, so he saw a ghost and made sure his stories didn't conflict with the other unverifiable stories.
He met a Person who he recognized and worshiped as God. He testifies to have seen Him and spent time with Him.
So, just like Joseph Smith?
Joseph Smith did not claim to be God. His followers never claimed to see him alive after his death. His teaching contradicts the Bible.
So they knew exactly as much as we do.
Logically speaking, they would have access to much more information than we have today.
Like libraries such as Caesarea, letters, and writings that are no longer available.
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Caesarea played an important role in early Christian history. Here the baptism of the Roman officer Cornelius took place; (Acts 10:1-5, 25-28) from here Paul set sail for his journeys in the eastern Mediterranean; and here he was taken prisoner and sent to Rome for trial. (Acts 23:23-24)...
The Church Father Origen founded a Christian academy in the city, which included a library of 30,000 manuscripts. At the beginning of the 4th century, the theologian Eusebius, who served as Bishop of Caesarea, composed here his monumental Historia Ecclesiastica on the beginnings of Christianity and the Onomasticon, a comprehensive geographical-historical study of the Holy Land.
Origen of Alexandria lived around 184 – 253 A.D., where he founded a Christian school there which included 30,000 manuscripts. Origin was originally from Alexandria so if anything was left of the writings of the Library of Alexandria he could have seen some of those texts, for according to Eusebius, Origin's father left him a small library of books.
Origen sold the small library of Greek literary works which he had inherited from his father for a sum which netted him a daily income of four obols.
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The Royal Library of Antioch
The Royal Library of Antioch was destroyed in 363 AD by the Christian Emperor Jovian, who "at the urging of his wife, burned the temple with all the books in it with his concubines laughing and setting the fire",...
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The Library of Pergamum
Pergamum was home to a library said to house approximately 200,000 volumes [in its prime]
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The Libraries of Trajan’s Forum
Contained around 20,000 scrolls, still mentioned into the 5th-century.
The Library of Celsus
Completed in 120 A.D., and contained around 12,000 scrolls.
The Imperial Library of Constantinople
Came into existence during the 4th-century and was said to contain, at its peak, 120,000 scrolls and codices.
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