Share 'Understanding BAPTIST Churches'

I come from a Pentecostal family(COGIC) the church I attend a Non-Denominational church, but where I'm lost is....when I see one of my church members go to a Baptist event and they say do not speak in tongues at their event. The Full Gospel Baptist Church(FGBC) follow Acts 2:4 and the follow the Baptist doctrine, in other word FGBC is Baptist and they speak in tongues. What my question is.... Why…