It's well known that Jones was a member of the US Communist party and heavily studied Marx, Hitler, Stalin, Mao, and others of that type. He was evil from the beginning. Jesus said that many false teachers would come in his name and Jones was classic example. Any real Christian would have seen right through him.
Yes, Jesus did warn of false teachers coming in his name and I believe one quickly showed up. He wrote several letters and claimed to have met Jesus and later claimed to have conversations with Jesus and even went on an excursion into 3rd heaven.
