This work offers an in-depth and well-documented study of water baptism through the Bible, Church history, and linguistic analysis of New Testament Greek. The author examines the biblical and theological meaning of baptism, highlights the divergences from certain ecclesiastical traditions, and demonstrates how a correct understanding of this sacrament sheds light on the divinity of Jesus Christ. Rich with quotations from ancient sources and scholarly references, the book is intended for theologians, pastors, theology students, and anyone seeking to return to the authentic teaching of the apostles.