that is not the consensus view. The Watchtower has done a fair bit of research on the matter and here is a snipet from an article in a 2008 watchtower
In the first century, people of all sorts knew how to read and write. On this point, Alan Millard, professor of Hebrew and ancient Semitic languages, observed: Writing in Greek, Aramaic and Hebrew was widespread and could be found at all levels of society. He adds: That was the environment in which Jesus worked.
Regarding the assertion that the Gospel texts arose in an entirely illiterate society, Professor Millard writes: That is an unlikely picture, [as] writing would have been known about everywhere . . . Consequently, there were usually people present who could have written something they heard, whether for their own reference or to inform others.
Apparently, waxed writing tablets were readily available and could be used to jot down information. An example of this is found in the first chapter of Luke. Zechariah, who had temporarily lost the ability to speak, was asked what name he wanted his son to have. Verse 63 says: He asked [apparently using gestures] for a tablet and wrote: John is its name. Bible dictionaries explain that the word tablet may have referred to a wooden writing board probably overlaid with wax. Someone present may have had a writing board with him, readily available for Zechariah to write on.
Another example illustrates that writing boards and their use were evidently known at this time. In the book of Acts, we read that Peter was speaking to a crowd in the temple area, exhorting them: Repent . . . get your sins blotted out. (Acts 3:11, 19) The expression get blotted out comes from a Greek verb that means wipe out, erase.
The New International Dictionary of New Testament Theology explains: The image expressed by the verb here and perhaps elsewhere is most probably smoothing the surface of a wax writing-tablet for re-use.
The Gospel accounts also show that Jesus followers and audiences included people who likely used writing in their everyday work. There were, for example, the tax collectors Matthew and Zacchaeus (Matthew 9:9; Luke 19:2); a synagogue officer (Mark 5:22); an army officer (Matthew 8:5); Joanna, wife of a high official under Herod Antipas (Luke 8:3); as well as scribes, Pharisees, Sadducees, and members of the Sanhedrin. (Matthew 21:23, 45; 22:23; 26:59) No doubt, manyif not allof Jesus apostles and disciples were able to write.
How can they all be illiterate AND be in occupations which required them to be literate such as a tax collector or officer of the synagugue and even members of the sanhedrin who would have been schooled in the rabbinical schools. All these were christians who couldnt read and write???? Does that even sound 'reasonable' to you???