The Glossolalia Phenomenon is a multipurpose book. The purposes are apparent in the light of (1) the confusion surrounding the subject in this day, (2) the evidence of increasing interest being shown in glossolalia, and (3) the need for undistorted scriptural guidance to those who are new in the Pentecostal way. This book contributes to a better understanding of this apostolic doctine by establishing a reservoir of sound, scriptural, historical, and empirical information on the subject of speaking in tongues.