The thing that separates Pentecostals from others Christian sects (in my understanding) is that we believe the human spirit, when connected with God’s Spirit, is more intelligent than the human mind, and operates separately from the human mind.
Pentecostalism believes that such a person will have a prayer language apart from the human mind, and at times will receive messages from God’s Spirit and will announce them in an appropriate setting with a language different from one’s native language.
This scares a lot of people, and then they ridicule it.
But people who think only with their minds short-sell themselves. We each have a spirit, we have a voluntary mind, where we use our free wills.
We also have an involuntary mind inside our brains.
This is what controls our heartbeat, makes us gasp when we come up for air from swimming, and makes us sneeze.
Scientists, using their sub-intelligent voluntary minds, are on an impossible quest to understand how our more intelligent, involuntary minds actually work.
The involuntary side of our minds is much smarter than the voluntarily side.
Except for our bodies, our voluntary minds are the stupidest part of us.
Am I saying that every Pentecostal Christian becomes an NASA engineer? Not at all. But the greatest knowledge is the knowledge of God, and born-again human spirits know more about God than the smartest secularist - even when our voluntary minds can't grasp who God is.