In this classic work of apologetics, Msgr. Vernon Johnson, a former Anglican minister and Catholic convert through encountering the life of St. Therese of Lisieux, presents a systematic and clear treatment based on solid Scriptural evidence for the case that there is only "one Lord, one Faith and one Baptism". This book was written to explain to his many friends and followers how he came to the decision to become a Catholic. His thorough, lucid documentation from Sacred Scripture presents a compelling, biblically-based argument for the authenticity of the Roman Catholic Church. Paper.