I was so mad when Robert Duvall did not win best actor for “The Apostle.” He so deserved it & it remains one of the best movies I’ve ever seen. Farrah Fawcett was also amazing in it.
But without the many actual real Pentecostals and the non-pro actors/natives in the movie (rejected for 13 years by producers) you would not have much of one (Duvall even cast all the extras from real congregation). Even the man with the radio station was the owner of a local furniture store and Duvall had to work around his schedule. I do think Duvall (whose father was a Methodist and whose mother was a Christian Scientist) does somewhat overplay the emotional Pentecostal aspect, versus the message.
Good review: https://www.csmonitor.com/1998/0205/020598.us.us.1.html