Oh boy...this is going to go over like a lead balloon, I'm afraid (just saw the exchange between others as I was proofreading it), but I already typed it, and it is the truth as my Church has faced it, so here goes:
Such nonsense as this 'Pentecostal' movement has attempted and even partially succeeded in infiltrating and destroying, in so far as it can, the traditional churches of Egypt and Ethiopia, of which I am gladly and thankfully a member. I say "partially" and "in so far as it can" because God only puts up with so much nonsense before sending strong fighters for the Orthodox faith to put down the heresies and right the ship. As it was in the days of our holy fathers saints Athanasius, Cyril, Ephrem, and others, so it is today by the grace of God with good bishops such as HG Bishop Abanoub of Mokattam, who had this to say about the infiltration of the Church of St. Simon the Tanner, which had been taken over by some slick 'Pentecostal' types who came into the area and offered the people (who are the poorest of the poor in Egypt) emotionally exhilarating but deeply heretical and poisonous "worship", in place of the manna from heaven that is Orthodox worship:
HG is very correct when he observes that the Church at that location had in all true ways ceased to be present, as it was at that time home to a different spirit, and a different worship. He is also correct in the way he puts forth to deal with it, saying in the following video: "Here we will sing Orthodox hymns, which all 20 million Coptic Orthodox rejoice in... He who wants to sing Protestant, or non-Orthodox, hymns... is free to leave along with those we have already sent out, and we here will sing Orthodox hymns."
And as for the Ethiopians, I don't speak their language so it would make little sense to link to the relevant videos here since I can't provide translations, but they do speak a language that is related to Arabic, so I can get a general sense of what they are saying sometimes, and when they call what is going on with the Pentecostal sects in their country (NB: Pentecostalism is big enough in their country that it appears to be used as the catch-all term for all forms of charismatic Protestantism, under the name
P'ent'ay, an Amharicization of
Pentecostal) a "Protestantawi Jihad", well...there's no need to guess what they mean, and if you know even a little bit about the history of Ethiopia's Orthodox empire vs. the Islamic warriors in the late middle ages (look up Ahmed Gragn and the Sultanate of Adal, 16th century), you know the lengths to which they will go to defend their faith against this sort of thing.
I think from the above you can probably guess what my answer to the question regarding Pentecostalism would be, though that's not to say anything about any individual who may be in such a system. God saves who He will, after all. I just think it is better for everyone to not follow TV preachers like Benny Hinn, Creflo Dollar, and all others who treat the faith like a parlor trick or an extended donation drive so that they can buy a newer airplane or whatever. On a spiritual level as well, I don't see any benefit let alone anything of the Holy Spirit in babbling in unintelligible tongues, rolling on the floor, or any of this other stuff. Watch the 1992 Steve Martin movie
Leap of Faith, if you can. The way his character (a conman modeled on a Pentecostal-type preacher) has the audience primed is really not too dissimilar from what the likes of Hinn and similar people do, and it is made all the more despicable by how it involves exploiting people's deepest-held beliefs and desire for hope, help, and healing. I would not trust any so-called 'spirit' that works through spiritual delusion and emotionalism and leaves people defrauded by con men. Lord have mercy.