Peter, Paul and John all claimed to be eyewitnesses
Paul lists 14 qhose names are known as eyewitnesses of the Resurrection (12 apostles, James and himself); also claims there are 500 others
The Resurrection was common knowledge, Paul was able to talk with great confidence about it because his audiance already knew the event was true. If there was a doubt, other would have called him out on it.
Confidence to talk to the king freely about the subject - Acts 26:24-28
Luke displays an incredible array of knowledge of local places, names, evironmental coniditions, customs and circumstances that only an eyewitness would have
There are 84 facts in the last 16 chapters of Acts that have been confirmed by historical and archaelogical research (pp256-259)
Luke also records 35 miracles in the same book, why would Luke so exact with the confirmed facts and not be accurate with the miracles?
In the book of Luke, Luke writes in the same Greek vocabulary and literary style
Since Luke had a perfect accuracy cbensscore in Acts, we can expect the same in the gospel of Luke.
Luke also has many historical crosshairs in the context of the gospel that could be easliy refuted if not true
Luke is a simular story in the other three gospels with book of John with nearly 60 confirmed/history consistent details (pp263-268)