David Koresh? LOL. That's a terrible comparison. His followers later told that he was abusing people.
Read this article and do some study with an open mind. Stop being a liberal atheist for a moment. The fact that some of the stories differed (in minor ways) is more evidence that the resurrection was true; if it was a fabrication, all of the stories would have been exactly the same.
https://www.desiringgod.org/articles/historical-evidence-for-the-resurrection
The Resurrection is the best explanation we have for the empty tomb, the disappearance of Jesus's body, the sudden belief of the Apostles and the resurrection eye witnesses.
None of the other explanations make any sense.