In this book of meditations, based on a series of homilies and meditations presented and compiled by the author shortly before he became Archbishop of Munich-Freising, in 1977, theologian Joseph Ratzinger (now Pope Benedict XVI) presents his profound thoughts on the nature and person of God, building a bridge between theology and spirituality as he makes wide use of the Sacred Scriptures to reveal the beauty and mystery of who God is. He writes about each of the three persons in the Holy Trinity, showing the different attributes of each person, and that "God is three and God is one."