Mankind is created in the image and likeness of God for the purpose of sharing in the Divine Life and participating in the blessedness of the infinite glory and goodness of the Holy Trinity. This Beatific Vision is not seeing God in His essence, but rather seeing God by possessing Him within oneself. Communion with God is attained through the cooperation of the divine and human will, whereby the follower of Jesus Christ puts on Christ through the sacraments of the Church and imitates the life of Christ through the sanctifying work of the Holy Spirit, to the glory of God the Father. Amen. Jesus describes in the opening words of His Sermon on the Mount all that produces beatitude. The very intent of the Beatitudes is to issue the Father's divine call for man to enter in the blessedness of the Divine Life. Therefore, the Beatitudes illuminate the pathway to theosis ("deification" or "divinization"), which is a journey of eternal progress in the virtuous life by which a perpetual transformation is made into the likeness of God from glory to glory. The Scriptures and the patristic writings of the Church Fathers provide the theological foundation of this book, the objective of which is to provide a guide for the soul to consciously advance in the spiritual life toward the divine goal of theosis in a step-by-step, concrete way. Dr. Christopher J. Mertens is a deacon in the Antiochian Orthodox Christian Archdiocese of North America. He serves at the parish of Saint Basil the Great in Hampton, Virginia. He received a master's degree in Applied Orthodox Theology from the Antiochian House of Studies in partnership with the Saint John of Damascus School of Theology of the University of Balamand in the Republic of Lebanon, under the aegis of the Greek Orthodox Patriarchate of Antioch. He is a Knight of the Order of St. Ignatius of Antioch. He holds a PhD in Physics from the Georgia Institute of Technology and is a Senior Research Physicist at NASA Langley Research Center in Hampton, Virginia. His areas of research are space weather and geospace environment modeling, galactic and solar cosmic rays, space and atmospheric ionizing radiation and dosimetry. He has published over 100 peer-reviewed journal articles on his scientific research. He is a recipient of the NASA Exceptional Scientific Achievement Metal and numerous other professional awards. Father Deacon Christopher and his wife, Rhonda, reside in Toano, Virginia. They have two adult daughters and two grandchildren. Publishers Maxim Hodak & Max Mendor