I know a former Assemblies of God member who was a pastor’s son, he got saved and preaches about the tongues heresy. One thing that opened his eyes was that he was in a back room at a rave concert in San Francisco and a guy in a black robe started leading these teens to speak in tongues. He says it was the same power that he felt at his church when people were speaking in tongues, but he knew this wasn’t of God. He’s a skydiver and called the sermon “Skydiving at Night.” It made him afraid. He also says after he got saved, he lost the “power of dance” that allowed him to dance with such power during the worship services.