Speaking in tongues, commonly referred to as speaking in the Holy Ghost, is a custom that various Christian traditions follow. It is thought to be a manifestation of the Holy Spirit, who is thought to give believers a direct line to God and an increased sense of spirituality.The Bible's book of Acts recounts a time when the apostles were assembled and unexpectedly infused with the Holy Spirit, allowing them to talk in tongues they had never learned before. Speaking in tongues is thought to have first occurred at this occasion, which is also known as the Day of Pentecost.A profound sense of spiritual ecstasy and joy frequently accompany the practice of speaking in tongues.