Speaking in tongues is a matter of Biblical record. It is mentioned in both the Old and New Testaments. Before we try to answer the question of the book’s title, we want to explore the Scriptures. How and why were tongues discussed in the Old Testament? Does the New Testament give us any guidelines on the purpose and use of tongues? Can these Scriptures help us today?

Speaking in Tongues: The Biblical Record
Speaking in Tongues: The Spiritual Gift
Speaking in Tongues: Gift or Fad?