Some Functions of "Speaking In Tongues"

"Yes, speaking in tongues is a wonderful gift of God.  By it, we are assured we have been filled with the Spirit.  By it, we are spiritually built up, and we contribute to the building up of the church.  By it, we make effective intercession.  And by it, unbelievers are directed to God."

R. L. Brant, "What are the Functions of Speaking in Tongues", in "Question and Answers about the Holy Spirit".