Jeremiah 23:15 - old testament - the bible I will make false prophets eat bitter food and drink poisoned water.
Sehih Bukhari 5:59:713 - one of the Kutub al-Sittah (six major hadith collections) of Sunni Islam. Muhammad in his ailment in which he died used to say ' Oh Aishah! I still feel the pain caused by the food I ate at Khaibar, and at this time, I feel as if my aorta is being cut from that poison.
L Ron Hubbard was taking a psych drug called Hydroxyzne and took a stroke. (scientology)
Joseph Smith founder of Mormonism was lynched and murdered by a mob.
Charles Taze Russell - founder of Jehovah's witnesses died a neutral death suffering from a bladder infection. (cystitis) man I almost had all four dying a false prophet's death.