On the Prayer of Jesus examines the transformative power of the Jesus Prayer within Eastern Orthodox Christianity ("Lord Jesus Christ, have mercy upon me"). Through the classic translation by Father Lazarus, Bishop Ignatius Brianchaninov presents the Jesus Prayer as a vital Christian practice for deepening one's spiritual life. Through historical context and rich theological insight, Brianchaninov highlights the prayer's ability to foster a profound connection with the divine, emphasizing its accessibility to all believers, regardless of their spiritual maturity. Readers will discover the enduring significance of humility, perseverance, and spiritual guidance in the practice of the Jesus Prayer. Brianchaninov provides practical advice for integrating this sacred invocation into daily life, offering a path toward inner peace and divine communion and addressing how to get started, approach difficulties, and communicate with friends and family who are unfamiliar with it. This compelling analysis serves as both a spiritual guide and a historical account, and its blend of historical narrative, theological reflection, and practical guidance offers a unique perspective that encourages readers to embrace the transformative potential of the Jesus Prayer.