This book examines thoroughly and in detail what the Scriptures teach about "speaking in tongues" and other supernatural signs, showing clearly what their purpose was in the early years of this church dispensation. That these gifts of the Holy Spirit were temporary is demonstrated from biblical doctrine and biblical history. The implications of present day claims and excesses are also carefully considered and their effects described. In addition, valuable teaching is given about the person and work of the Holy Spirit today, and there is a timely warning about the New Age movement.