It is my understanding that for the most part, Pentecostal movements and churches were begun by men (and women) who IMO lacked the necessary biblical scholarship to lay the foundation for a Church. Their doctrine is all over the map, with crazy emphasis and even more crazy practices and notions. I had a fiancée years ago who was a Pentecostal. She and her female contingent had not the slightest idea of what they were doing or what they were taking about. Sure they were thumping a bible and had scripture posted all over the house. But when you are attending church where the main activity is smashing cymbals, noise, wailing, screaming, obviously fake supposed spiritual activity, and people falling over, with ZERO accurate biblical teaching in order to equip of the Saints for witnessing, you are doubtless in a fraud church founded by the flesh and in the flesh.
God willing they all escaped from that madness.