"Mystic Christianity - The Inner Teachings of the Master" is a book authored by William Walker Atkinson, a prolific writer and influential figure in the New Thought movement of the late 19th and early 20th centuries. Published in 1908, this book explores the esoteric and spiritual aspects of Christianity, delving into the hidden or inner teachings attributed to Jesus Christ.

Atkinson's work seeks to uncover the deeper spiritual truths embedded within the Christian tradition, drawing upon a variety of sources including biblical scripture, ancient wisdom traditions, and metaphysical principles. He presents a reinterpretation of Christian doctrine and theology from a mystical perspective, emphasizing the importance of personal spiritual experience and inner transformation.

In "Mystic Christianity," Atkinson explores concepts such as the nature of God, the divinity of Christ, the power of prayer and meditation, the reality of the soul, and the eternal life of the spirit. He discusses the significance of spiritual symbolism found within the Bible and other sacred texts, interpreting them as allegories for deeper metaphysical truths.

One of the central themes of the book is the idea of the "Christ consciousness" or the "divine spark" within each individual, which Atkinson suggests is the key to spiritual enlightenment and union with God. He advocates for a direct, personal relationship with the divine, emphasizing the power of love, faith, and inner illumination as the means to achieve spiritual awakening and salvation.

"Mystic Christianity" is regarded as a pioneering work in the field of mystical Christianity and has influenced countless individuals seeking to reconcile their spiritual aspirations with the teachings of the Christian faith. Atkinson's synthesis of esoteric wisdom and Christian theology continues to resonate with seekers of spiritual truth and enlightenment.