You will not believe anything until you see it, no matter what documentation you might be presented with. Even seeing you most likely will doubt. Your gospel is a destination only.
Look at the link I gave concerning Smith Wigglesworth.
First you can go to one of his websites where he is glorified as the apostle of Pentecostalism, and how so many miracles have been attributed to him.
But then go the link I provided. Know this.
God does not work contrary to His Word, or contrary to His nature. That link provides a critique of the writings of Wigglesworth own testimony and the "miracles" that he did, and compares it to the Word of God.
The Bible says that if the prophecy of the prophet of the OT failed even one time know that he is a false prophet and he was to be put to death. He had to be accurate 100% of the time. Wiggleworth was not. In fact he himself lived in pain most of the time, and he could not cure his wife either.
Here is an example of the "healings" of Wigglesworth:
"All right," cried Brother Wigglesworth. "You can deliver yourself. Put your hands on your back where the pain is. Now command the devil to come out. Say it aloud, 'Come out, you devil, in the name of Jesus.'"
Where in the Bible do you find Jesus or the Apostles giving commands to others to "heal themselves." That is absurd. The same is true of telling someone to cast out a devil out of themselves. But he didn't base his theology on the Bible. He based it on experience. His "miracles" were not so visible, as you can see. They were inward and unknown, just like most Charismatic "faith healers" today.
They would not dare take up the challenge to go to a hospital and heal all the sick there, like a true faith healer would be able to do.
They could never duplicate the works of Jesus or even of Peter in Acts 5:16 who healed all that came to him no matter how serious the infirmity or sickness was.