There has always been the spiritual, because God is Spirit, and so are His created beings. So there are spiritual forces and powers, but not all are from God since we know Satan and his followers rebelled against God. And they do have spiritual power since they too are spirit beings with supernatural abilities, and that’s why God tells us not to consult or partake of the occult because the source is from the kingdom of darkness instead of the kingdom of light. But those who are born again christians, who have received the gift of the Holy Spirit can operate in spiritual gifts which can be evidently seen throughout the bible especially in 1 Corinthians 12. Unfortunately most “mainstream" Christianity teaches that those kind of things ceased when the last apostle died, but the bible does not teach that, in fact it says in Joel 2 verse 28 " And it shall come to pass afterward, that I will pour out my spirit upon all flesh; and your son's and daughters shall prophesy, your old men shall dream dreams, your young men shall see visions" and also in Mark 16 verse 17 " And these signs will accompany those who believe: in my name they will cast out demons; they will speak in new tongues; they will pick up serpents with their hands; and if they drink any deadly poison it will not hurt them; they will lay their hands on the sick, and they will recover". Me personally I've witnessed Jesus do some supernatural stuff through people like healing blind eyes, cancers, dead people coming back to life, and much more.