What did Saint Paul say about speaking in tongues?

Paul had much to say about tongues, most of which has been of grossly mis-interpretation. The Greek Word "glossa" is interpretid "tongues" in the New Testament as has the Hebrew Word "lashown" in the old and simply means language. The need for speaking in another language or tongue was most important for missionary work and for Jews comming to Jerusalem from other countries, though God is the ultimate and consumate interpreter. The importance or lack of Paul addressed clearly in the fourteenth chapter of first Corinthians. Following are a few verses: 1Cor 14:5, 6, 22, 23, 27 and 28. Instructions are here that dictate that tongues, however one may view them, are not to employed unless an interpreter is present. Tongues are a sign to unbelievers as you will read so the typical usage is mis-used and unscriptural.