Are there contradictions in the 4 gospels concerning the resurrection of Christ?

[MonoBiblical]

Why titles came later
The formal naming of works like “Gospel of Mark” or “Epistle to the Romans” developed as the canon was defined in the 4th century, especially after councils such as Nicaea (325 CE) and the work of church fathers like Eusebius. Before that, the same text could be called by different names in different regions, or simply referred to by its content.

In summary
Before standardized titles, early Christian texts were recognized by their content, audience, or language. This fluidity reflects the diversity of early Christian communities and the gradual process of canon formation, where many works were preserved, others lost, and only a few became the fixed “New Testament” we know today

Without evidence, you say these things.

 

[MonoBiblical]

How do scholars know a Christian text is a true copy?
As it is now museums are full of antient Christian texts as a whole or fragments.
Those that date before 250 AD are thought to be closer to the originals.
So how do they know what are true copies.
1. They do not have titles.
2. They know the errors in the older texts and if those errors are corrected they know it is not a true copy.
3. The older Texts do not include the additional verses and stories found in texts after 250 AD.

How does anyone know the date of manuscripts which are not dated by radiocarbon?