My brother belongs to a Pentecostal Church. He has invited me to his church several times and I went there but only once. The high volume singing and speaking in tongues made me uncomfortable therefore I consistently declined to go back. However, in searching the scriptures, I could not find anything that condemns the practice. The only thing I can find is Paul's letter to the Cornithians where he indicated his preference for christians not to speak in tongues (in public) as it has no value for edifying the church. But his preference was for them to seek the gift of prophesizing and interpreting prophesy.
My question is is there any scriptural support for this practice? Alternatively, does the Bible condemn the practice. Also, is it wrong to become Charismatic?