“You need to be the exorcist appointed by the bishop; you need to have the backing of the Catholic Church behind you,” said King.
“If you do not have that authority, the demon can read that ― and he doesn’t have to go,” he added.
King then distinguished between doing deliverances and performing the major rite of exorcism.
“In deliverances, which any priest can do, you are asking God in His love and mercy to free this person of this oppression or curse, etc.,” he said. “In the [major] rite of exorcism, the priest has permission; he has been asked by the bishop to do it.”
The exorcist priest does not have carte blanche from the bishop to perform exorcisms whenever he sees fit.
“The priest must ask permission from the bishop for every individual exorcism he does, so it is a totally different process than deliverance,” said King.”
https://www.churchmilitant.com/news/article/polish-bishops-are-serious-about-training-exorcists
“Fr. Jose Pronounced Dead
While my body was at the hospital, the doctor completed all examinations and I was pronounced dead. The cause of death was bleeding. My family was notified and since they were far away, the hospital staff decided to move my dead body to the morgue. Because the hospital did not have air conditioners they were concerned that the body would decompose quickly. As they were moving my dead body to the morgue, my soul came back to the body. I felt an excruciating pain because of so many wounds and broken bones. I began to scream and then the people became frightened and ran away screaming.
He is alive! It is a Miracle.
One of them approached the doctor and said: “the dead body is screaming.” The doctor came to examine the body and found that I was alive. So he said: “Father is alive, it is a miracle, take him back to the hospital.”
https://www.sign.org/articles/father-joses-life-death-experience