A Demon-Possessed Man is a Prove of Spirits

I didn't know why some other people doesn't believe in the existence of God, it is also because they do not believe in a spirit being. But a man who possessed by an evil spirit is proven by my two eyes, and I'm telling you that now, I doesn't tell a lie. There is also a demon-possessed man mentioned in the Bible, and here are the verses of the Holy Scripture about a man or a woman that possessed by an evil spirit.

Matthew
4:24 Then his fame went throughout all Syria, and they brought to him all sick people who were afflicted with various diseases and torments, and those who were demon-possesed, epileptics, and paralytics, and he healed them.
8:16 When evening had come, they brought to him many who were demon-possessed. And he cast out the spirits with a word, and healed all who were sick.
8:28 When he had come to the other side, to the country of the Gergesenes, there met him two demon-possessed men, coming out of the tombs, exceedingly fierce, so that no one could pass that way.
9:32-33 As they went out, behold, they brought to him a man, mute and demon-possessed. And when the demon was cast out, the mute spoke. And the multitudes marveled, saying, “It was never seen like this in Israel!”
12:22 Then one was brought to him who was demon-possessed, blind and mute, and he healed him, so that the blind and mute man both spoke and saw.

Mark
1:32 At evening, when the sun had set, they brought to him all who were sick and those who were demon-possessed.
5:2-5 And when he had come out of the boat, immediately there met him out of the tombs a man with an unclean spirit. Who had his dwelling among the tombs, and no one could bind him, not even with chains.

Luke
8:27 And when he stepped out on the land, there met him a certain man from the city who had demons for a long time. And he wore no clothes, nor did he live in a house but in the tombs.

Acts
8:6-7 And the multitudes with one accord heeded the things spoken by Philip, hearing and seeing the miracles which he did. For unclean spirits, crying with a loud voice, came out of many who were possessed, and many who were paralyzed and lame were healed.
16:16-17 Now it happened, as we went to prayer, that a certain slave girl possessed with a spirit of divination met us, who brought her masters much profit by fortune-telling. This girl followed Paul and us, and cried out, saying, “These men are the servants of the most high God, who proclaim to us the way of salvation.”

As I was also have an experience sawing a possessed woman by an evil spirit other than what's the Sacred Book said. And according to her, she possessed by a dwarfs. Her personal information wasn't written here for her privacy, but I really know a lot about that person. When I was in the house with a demon-possessed woman in my front, she say her vision about an evil spirit in her to her uncle, “Brother... It is holding cigarette.” And her uncle said, “Where, where? Is this?” And immediately he hold the right ear of the woman, and she cry with a load voice saying, “Ah!!” Her ear was burned by a dwarf with the cigarette according to her vision, the vision of a demon-possessed woman. That is a true story of her with me which witnesses by my two eyes, an eye of a man who has doubt to say that he is a honest, but that woman is now okay. John 4:23-24
But the hour is coming, and now is, when the true worshipers will worship the Father in spirit and truth, for the Father is seeking such to worship him. God is a Spirit, and those who worship him must worship in spirit and truth. If the spirit doesn't exist, then why it is happened to that woman, and why a possessed man by an evil spirit is also written in the Bible? There's really have an extra ordinary happened to our life which can't understand by human. A man who possesed by an evil spirit is one of a prove of spirit, and one of a prove of the existence of God is a spirit also, because according in the Holy Book of John on chapter 4 at verse 24 which was written above this paragraph, God is a Spirit.