The practice of meditation is not only found in the spiritual disciplines of the East, but also in the Christian tradition. It involves imageless and silence prayer through repetition of a Mantra: Maranatha. This word centers the whole subject in the presence of Christ. The tradition of Western monasticism was assumed by Main from its roots, walking towards a contemporary Theology of meditation based on St. Paul's letters, who understands the real presence of the risen Christ in human heart. Convivium Press is honored to publish for the first time in Spanish his last writing: Moment of Christ. The path of meditation, including a Prologue written by Laurence Freeman osb, current Director of the World Community for Christian Meditation.