Today's Church-goers are earnestly seeking the Holy Spirit. Pew-sitters crave authenticity; they are not satisfied with vague superficial analogies and explanations. They desire to encounter God, truly grow in real holiness, and obtain the knowledge to understand and explain their faith. Unfortunately, the only books available for them on the rich topic of the Third Person of the Trinity are either strictly academic or primarily experiential based on the Charismatic renewal (and even these books tend to lack a real explanation of who the Spirit is and how His gifts operate). Knowing the Unknown God is a book for those seeking to know the Holy Spirit both in their hearts and in their minds. The book begins by addressing the problem of the lack of intimacy with the Spirit in today's Church, especially when compared to the Early Church. It proposes that we are not only able to have a personal relationship with the Spirit, but we ought to, and it is necessarily transformative (i.e. your life will not be the same ). The next two chapters build the foundation for our life in the Spirit by providing an accessible theology of the Spirit. The theological overview places the understanding of the Spirit from the beginning of Creation to His indwelling within our souls and everything in between. It addresses who the Spirit is in Himself, who He is in the Trinity, and who He is in the Church. These chapters explain the Spirit of the Father and the Son who is also the Anointing with which we become children of God (and what this looks like ). Although the theology does not stay on the surface, it is not academically overburdening for those without much theological education. The following five chapters of the book explore the Spirit's relationship to us in everyday terms. They explore how the Spirit makes us Holy and the practicality of growing in discipleship of Christ in the Spirit even to the point of mysticism. That's right, mysticism. Do you want to know how to become a mystic even within your busy schedule and everyday life? Well here's where you'll find out how After explaining the specific ways in which the Spirit leads each of us to holiness and growth in our spiritual lives, the concluding two chapters incorporate this into the Spirit's relationship to Our Lady. These chapters focus on the depth and reality of Mary's union with the Holy Spirit and its implications on our spiritual and active lives as Christians. With the marrying of the devotion to the Holy Spirit and Marian devotion, the reader is left empowered to go out beyond themselves to share this Good News filled with the Spirit through the intercession of His well-beloved Spouse, the Immaculata.