Unless the U.S. Supreme Court intervenes, John Errol Ferguson, an elderly Florida prisoner with paranoid schizophrenia, will be strapped to a gurney and intravenously injected with a lethal cocktail tonight at 6 pm EST by the state of Florida.

Last night the U.S. Court of Appeals for the Eleventh Circuit, in a divided ruling, lifted a stay of execution granted over the weekend by a U.S. District Court judge. His lawyers have since filed for a last-minute emergency reprieve from the U.S. Supreme Court.

Since Florida Governor Rick Scott signed Ferguson’s death warrant last month, one Florida court after another has ruled that Ferguson is competent for execution, despite a U.S. Supreme Court ruling that prohibits killing mentally ill prisoners who have no rational understanding of the reason for and effects of their execution. Ferguson clearly lacks that understanding, a conclusion reached by several state-appointed psychiatrists as well as nationally renowned experts.

Among his many delusions, Ferguson believes he’s the “Prince of God” chosen to fight two antichrists alongside Jesus – after which he will rule the world with multiple wives. He see’s his incarceration as part of a “hardening” process designed by God to prepare him to return to earth after his execution and save America from a communist plot. Furthermore, Ferguson is convinced that he is invincible because his special powers protect him  from ever being killed and that “just like Jesus, you’ll come and look and you won’t find me there [in my grave]”.

Florida’s courts have come up with a number of justifications for Ferguson’s supposed competence, the most peculiar being the conclusion reached by Eighth Judicial Circuit Judge David Glant, who ruled that Ferguson’s “Prince of God” delusions, while “genuine”, are not “significantly different than beliefs other Christians may hold.”

If the U.S. Supreme Court fails to intervene, it will have lasting implications for states that routinely sidestep the constitution to execute even the mentally ill. Death penalty loving states like Texas are no doubt watching this very closely.