The accounts that were received or delivered were both recorded and oral. The latter were passed on by eyewitnesses and ministers of the word.
Some of these people were there at the very beginning of the gospel events and thus are witnesses to the very beginning of Luke’s Gospel.
2 suivant ce que nous ont transmis ceux qui ont été des témoins oculaires dès le commencement et sont devenus des ministres de la parole,