"david koresh, leader of the ill-fated branch davidians in waco, texas, believed that he was "god's anointed one," who would bring about the end of the world. this is a delusion."

The answer is "Grandiose delusions".

Grandiose delusions (GD), dreams of loftiness, extensive delusions otherwise called megalomania are a subtype of daydream that happen in patients experiencing an extensive variety of mental sicknesses, including 66% of patients in hyper condition of bipolar issue, half of those with schizophrenia, patients with the affected subtype of hallucinating issue, and a significant part of those with substance mishandle disarranges.