From the beginning until "the Fullness of time," 60 The joint Mission of the Father's Word and Spirit Remains hidden, but it is at work. God's Spirit prepares for the time of the Messiah. Neither is Fully Revealed but both are already Promised, to be watched for and welcomed at their Manifestation. So, for this Reason, when the Church reads the Old Testament, she searches there for what the Spirit, "who has spoken through the Prophets," wants to tell us about Christ. 61