This treatise supports the historical view that the tongues phenomenon in 1 Cor 14 is identical to that in Acts 2. Hence, it argues that the tongues referred to in 1 Corinthians are known human languages and not angel speech, riddles, ecstatic irrational utterances or groans. In addition, it contends that this gift was meant to be used for an evangelism that would build up the church. Nevertheless, the local tongues-speakers were abusing this gift by employing it to exalt self, even using it in public worship services where no one present knew the language. It is this abuse that Paul addresses throughout 1 Corinthians, not the phenomenon itself. When seen in this light, the difficult texts in this biblical passage become clear.