Speaking in Tongues by Luciano Subira is a biblical and pastoral exploration of the gift of tongues and its place in the life of the Christian believer. Drawing from the New Testament, especially the accounts in Acts and the teachings of the apostle Paul, Luciano explains the purpose of this spiritual gift and addresses common questions and misunderstandings surrounding it. With clarity and balance, he distinguishes between the public manifestation of tongues in the church and the personal prayer language that edifies the believer’s inner life. Rather than treating the subject as a theological curiosity, the author presents it as a practical resource for intimacy with God and a deeper experience of life in the Spirit. Written in a warm and accessible tone, the book invites readers to approach the subject with biblical conviction, humility, and openness to the work of the Holy Spirit.