What is the gift of tongues?

In this episode of the Old Roads Podcast, Dr. Aaron O’Kelley explores the biblical teaching on the gift of tongues/languages. Cessationists believe this gift had narrow purposes that now no longer apply, and thus the gift is no longer given to the church. Continuationists take an opposing view, arguing that many believers today are gifted with tongues for prayer. Which view best fits the evidence of the Bible, and what are the implications for us as believers?