Introduction To Christianity - pg. 54

"Do you believe in God - in Christ - in the Holy Spirit?" We can now add that it thereby represents the positive corollary to the triple renunciation that precedes it: "I renounce the devil, his service and his work."
This means that faith is located in the act of conversion, in the shift of gravity from worship of the visible and practicable to trust in the invisible. The phrase "I believe" could hhere be literally translated by "I hand myself over to", "I assent to". In the sense of the Creed, and by origin, faith is not a recitation of doctrines, an acceptance of theories about things of which in themselves one knows nothing and therefore asserts something all the louder; it signifies a movement of the human existence; to use Heidegger's language, one could say that it signifies an "about-turn" by the whole person which from then on constantly structures one's existence. In the procedure of the threefold renunciation and the threefold assent, linked as it is with the thrice-repeated death-symbol of drowning and the thrice-repeated symbolization of resurrection to new life, the true nature of faith or belief is clearly illustrated: it is a conversion, an about-turn, a shift of being.