Luigi Giussani emphasizes that the Mystery which is the Source of everything, in revealing Himself as "Father," shows Himself to be our intimate companion.
"Even if it is translated into human terms, the result of revelation must be the intensifying of mystery as mystery. It must not reduce mystery, like a human being saying, 'I understand!'but rather deepen it. In this way, it is understood and yet always more understood as mystery.
"For example: the world and my own life depend on God. And this is true. But if we replace the enigmatic word 'mystery' that reality suggests, with the word, 'Father' that revelation implies, then we have an extremely comprehensible term, which is part of our experience: it is Father who gives me life, who has introduced me to the beauty of things, who has put me on my guard against possible dangers. VoilĂ : the Absolute, the Mystery, is Father, to repeat, 'tam pater nemo.' No one is such a Father. This truth that Christ has revealed does not diminish the Absolute. Rather, it deepens our knowledge of the mystery: Our Father who art at the depths, who art in heaven, Our Father who art in my profound roots, Thou who art now making me in this instant, who generate my path and guide me to my destiny!
"You can no longer retract after hearing these words of God. You can no longer go back. But, at the same time, the mystery remains, remains more profound: God is father, but he is father like no other is father. The revealed term carries the mystery further within you, closer to your flesh and bones, and you really feel it in a familiar way, as a son or daughter. There is no one who respects the sense of truth and is as devoted to his father as when the father is truly an intimate companion."
~Luigi Giussani, The Religious Sense, chapter 15.