All three. Some lie to convince others. They do this to gain money from others. The others believe that they are following Jesus even though they aren't. They believe that they are being told the truth even though they aren't. They are trying to do what they think is right. Usually, they fear that they will go to Hell if they don't do what they are told to do. I know that I don't have to fear that because I know that I actually know God. So, I don't listen to liars. I even try to go against them whenever possible. The truth is that God is real and that God is love. Anything else is a lie. And, yes, I can prove that God exists. I can give you the physics to prove it. I guess that should be my next writing on Medium.