[CynicalBear]

>>to write an orderly account for you, most excellent Theophilus" - Luke 1:1-3<<

You just proved that they wrote it down so there would be a record to refer and look back to. No relying on “word of mouth”.

[Natural Law]

"You just proved that they wrote it down so there would be a record to refer and look back to."

The Gospel of Luke was written some 40 to 70 years after the ministry of Jesus and then not widely distributed for another hundred years. It was fed by the Oral Teachings of the Apostles and witnesses which continues to this day.