Superstition. God made it very clear that those who curse others will be cursed. You like to believe in ghosts and spirits, but you don't believe that there is a higher righteous Lord in charge of the universe. If the evil tricks in this world are really so powerful, all Christians will perish. Because Christians are particularly opposed to these fake religions and witchcraft. I don't see them cursing Christians. They are so powerful, why don't they come? If these malicious witchcraft really have this effect, and there is no retribution. You have to believe that there is no justice in the world, only evil is the way out. But your conscience tells you otherwise. In that case, what are you afraid of? God is just and kind, he is the creator, and evil will be rewarded.
In addition, if matter can radiate the power of the spiritual world, it is not matter. If you believe that you will be fooled, and you are afraid of the evil forces in the spiritual world, it means that you know that the forces in the spiritual world are higher than people, but your rationality also lets you know that matter is lower than people. How does matter override people and show the power of the spiritual world? Because man is a combination of spirit and matter. Without a soul, the body is a motionless corpse. Therefore, the peach sword can't ward off evil spirits, the material can't subdue the spiritual world, nor can it curse people.