"Given that historians look to those who are contemporaries of the events, Paul is an important resource for what historians can know about Jesus of Nazareth. Furthermore, the earliest documents we have for the life of Jesus are Paul’s letters. Paul was a very competent rabbi who was trained at the rabbinic academy called the House of Hillel by ‘Gamaliel,’ a key rabbinic leader and member of the Sanhedrin. Both Christian and non-Christian scholars have come to have great respect Paul."
He then continues by listing some very basic things that he contends all Christians should know about Paul.
You can checkout this excellent article here. For more from Chabot, see here.
For more great resources checkout the Christian Apologetics Alliance.
Courage and Godspeed,