Mystery theology is the attempt at a synthesis of all the doctrines of faith from the point of view of the mysterium, i.e., of God’s action by which he has effected our salvation in Christ and which is transmitted to us in the Church, particularly in its sacraments and liturgical celebrations. The initiator of this synthesis in contemporary theology was Odo Casei, a monk of Maria Laach, who died in 1948. At first he met with much opposition, but in the long r…