Funny this thread should come up now as I have recently got to know some Pentecostal Christians. Their meetings are all about singing praises to God, asking Him to come into their hearts and lives. They seem to be very sincere and there isn't any indoctrination process going on as far as I can make out. They are very much about the love of God and it is based on their emotional response. They have Alpha Courses from time to time, which teach the basics of the Christian faith. I believe their understanding is in keeping with the scripture : "You search the scriptures, because you think that in them you have eternal life; and it is they that testify on my behalf. Yet you refuse to come to me to have life."
Maddie