4 . When Paul was on the road to Damascus he saw a light and heard a voice. Did those who were with
him hear the voice?
(a) Yes (Acts9: 7)
(b) No (Acts22: 9)
5.When Paul saw the light he fell to the ground. Did his traveling companions also fall to the ground?
(a) Yes (Acts 26:14)
(b) No (Acts 9:7)
Luke wrote the book of Acts in 63AD. He was a historian of the time and hired by Theophilus to record who Jesus was and what was happening within the new Church. Theophilus couldn't drop everything to follow these people around but he wanted to know everything that was happening so he sent Luke.
In Acts 9:7 Luke has recorded the event shortly after it happened when Saul arrived in Damascus. "The men with Saul stood speechless with surprise, for they heard the sound of someone's voice, but they saw no one."
In Acts 22:9 Luke is recording a speach that Paul is making to the Jews who want him stoned to death. The Roman commander has agreed to let him speak to them. He tells them about the moment of his conversion when Jesus came to him. "The people with me saw the light but didn't hear the voice."
Obviously a slip of the tongue on the part of Paul. It does prove however that Luke was dutiful in his recording of everything that happened as it happened. If he had wanted to edit the book he would have fixed this to ensure there was no contridiction. But he didn't, he wrote the truth and the facts without editing.
In Acts 26:14 Paul is explaining why he is being persecuted to King Agrippa who is sending him to the Emperor in Rome. Once again Paul tells about his trip to Damascus. "We all fell down, and I heard a voice saying to me in Aramaic, Saul, Saul, why are you persecuting me? It is hard for you gight againstmy will."
So # 5 is the same as # 4. It only proves that those who wrote the Bible took it so seriously they didn't change a thing, just wrote what they saw as they saw it. It was not then put together and edited by anyone.
It should also be noted that Luke would have sent each chapter off to his employer after writing it, just like a letter. He wouldn't of waited until he was done.