Every believer speakes in tongues. The Holy Spirit speaks in words and groans that cannot be understood. Pentecostals just amplify what He is saying. :)
Tongues spoken in a church setting is a different matter. They are words to edify the body of Christ.
Romans 8:26 Likewise the Spirit helps us in our weakness. For we do not know what to pray for as we ought, but the Spirit himself intercedes for us with groanings too deep for words.
Words are words. Whether they're English, Russian, Hebrew, or some *prayer tongue*. If the groanings of the Holy Spirit are too deep for words to express, then they aren't coming out of our mouths because what comes out of our mouths are words being expressed, even if it is a *prayer tongue*.
And I also find no Scriptural support that praying in tongues is more effective than praying in English. God knows the heart and is not bound or released by the language.
For that matter, if we're going to use the language of God, we'd better get back to Hebrew. After all, that's what the Law was written in.
1 Corinthians 4:1-5 1 Pursue love, and earnestly desire the spiritual gifts, especially that you may prophesy. 2For one who speaks in a tongue speaks not to men but to God; for no one understands him, but he utters mysteries in the Spirit. 3On the other hand, the one who prophesies speaks to people for their upbuilding and encouragement and consolation. 4The one who speaks in a tongue builds up himself, but the one who prophesies builds up the church. 5Now I want you all to speak in tongues, but even more to prophesy. The one who prophesies is greater than the one who speaks in tongues, unless someone interprets, so that the church may be built up.
This is one area I see error in the thinking on tongues.