Bart Ehrman does not think Paul spoke Aramaic or was persecuting Aramaic speaking Christians.

For some reason he really has a problem with Acts of the Apostles.

Someone else on his blog countered with:
Acts of the Apostles – Paul in Jerusalem (NET bible)
21:40 When the commanding officer had given him permission, Paul stood on the steps and gestured to the people with his hand. When they had become silent, he addressed them in Aramaic,

22:1 “Brothers and fathers, listen to my defence that I now make to you.” 22:2 (When they heard that he was addressing them in Aramaic, they became even quieter.) Then Paul said,

22:3 “I am a Jew, born in Tarsus in Cilicia, but brought up in this city, educated with strictness under Gamaliel according to the law of our ancestors, and was zealous for God just as all of you are today.

~ ~ ~

So, for Bart, it is possible that he does not think Jesus spoke to him in Aramaic when Jesus appeared to Saul. Saul would not have been able to understand Jesus. My response to Bart on this topic is that Jesus must have spoken Greek to Saul since Saul could understand Greek.

In a vision, the communication can be telepathic . It can also be in the language of the person experiencing the vision. If the appearance of Jesus was only in Saul’s mind, he would have had less credibility. In that Jesus appeared to disciples after his resurrection, believers give Paul the benefit of the doubt that he saw not the resurrection body of Jesus but a glorified spirit body of Jesus. When Jesus appeared to his disciples, there was no blinding light first.

Also, it is the Holy Spirit, not necessarily Jesus who allows people to hear messages in their own tongue.

Back to the Ehrman statement. Is it possible Saul was only persecuting the Hellenistic Jews where there was no language barrier?

Ehrman says the Nicodemus – Jesus exchange of confusion over born again happens only in Greek.

For Jesus to ask Saul why are you persecuting, then the Hellenistic Jews who were Christians shows Jesus did develop a following with Hebrew-speaking Jews as well as the Greek-speaking Jews and came to their defense, putting a stop to Saul.

The rest of my response to Ehrman:

So, if he was not persecuting Aramaic speaking Christians, the probability rises that he was persecuting the Hellenistic Jews. Some would say Saul/Paul was present at that killing.

Jesus comes to the defense, then, with high probability, of persecuted Hellenistic Jews, Greek-speaking Jews.

Stephen and other Hellenistic followers of Jesus saw and probably were acquaintances of Jesus. A Greek theater was at Sepphoris, Galilee. The famous Nicodemus-Jesus exchange was in Greek. Conclusion: A Greek theater is in Jesus' stumping grounds, Mark writes a gospel with Homeric overtones, the Nicodemus-Jesus exchange makes sense in Greek only, Saul could have only understood what Jesus was saying if Jesus were speaking Greek to him, the Hellenist Stephen gives his life for Jesus who developed a following in the Hellenist community.

Even if disciples with Greek names were translators for Jesus before he died. There is no translator present when he's speaking with Nicodemus. Both Jesus and Stephen see the Son of Man at the right hand of the Power. Jesus speaks like a Hellenistic Jew when he says at John 10: 34, Is it not written in YOUR law, not OUR law. (A chapter of my book is on this topic.)

Stephen means king. King-Jesus could be the Jesus that was stoned according to the Babylonian Talmud.