I certainly feel sorry for delusional people. They honestly believe their view of reality is true and they can't understand why everybody doubts them. I've known folks like that. To them, people really were spying on them or stealing their possessions.
A band called Strawbs recorded this interesting song on one of their albums in the late sixties. I don't know if it was based on a true event but it's still an interesting song.
Listen to it here:
The real Jesus warned his followers about a far more sinister group of imposters. Whether they actually believed their delusion or not, their claims to be the Christ were prophesied by our Lord.
Our Lord warned in Matthew 24:24 (KJV), "For there shall arise false Christs, and false prophets, and shall show great signs and wonders; insomuch that, if it were possible, they shall deceive the very elect."
Not only that but there are fakers who claim to have God's revelations yet they're in fact deceivers. We read in 1 John 2:18 (KJV) that, "Little children, it is the last time: and as ye have heard that antichrist shall come, even now are there many antichrists; whereby we know that it is the last time."
Mentally-ill people can be excused for their delusions but not deliberate agents of Satan. This is why we absolutely must know the Word of God so well that we can spot a counterfeit preacher instantly.
On Monday, I'll post about what context is and why it's so important to consider it when studying the Bible. Scriptures can be twisted to mean what they aren't supposed to if not for this discernment skill.