ON the other hand, if read broadly, I guess many of those churches would believe in god as the maker of heaven and earth, while many mainstream Christians (catholic and protestant) no longer would.
The critical part is the belief that Jesus rose from the dead. This proves he was God. Thus, if you please him, you can be saved from death, too. If Jesus did not rise from the dead, if this is just a story, then there is no "secret knowledge" that cannot be accessed by dint of mind. If this is so, then the church is bogus and its demands for special treatment, are frauds. So it all hinges on the one question: did Jesus rise from the dead?