by jimwalton » Tue Jan 26, 2016 10:12 am
Besides Matthew, as you have mentioned, James and John may have been of a priestly family (Jn. 18.15), and logically would have been schooled accordingly. Throughout history, Jews have been known to give priority to literacy and education in their societies. The first century was no different, since Jesus appeared in the Temple for his bar mitzvah at age 12.
In addition, the Gospel of John has more eyewitness accounts than the other three Gospels combined:
- Times of day (1.39; 4.6, etc.)
- A link with one of the feasts (2.13, 23, etc.)
- Place names are brought in naturally and for no apparent reason other than narrative events
- The call of the disciples (1.35-51)
- The episode of the foot-washing (13.1-20)
- Information about persons not mentioned elsewhere: Nicodemus, Malchus, Annas
- Claims to eyewitness testimony (1.14, 19.35)
...to name a few. It gives credence to the position that John the disciple was the author of the Gospel of John (a position, by the way, unanimously advocated in the early centuries. Unanimously.) Therefore, John was most likely also literate, and therefore possibly his brother James as well.
The writers of the early church (Chrysostom, Andrew of Crete, Refines, Prosper of Aquitaine, Gregory of Tours, Bede, Bar-Hebraeus) unanimously attribute 1 Peter to the Apostle Peter. But the level of Greek seems far beyond what a Galilean fisherman would be capable of. What's likely is that Peter dictated his letter to Silas (1 Pet. 5.12), who wrote it in good Greek. So we don't know if Peter was literate or not.
The rest we don't know enough about.