
The opposite of faith

Faith is neither rational nor irrational. It is the courage to make a commitment to an Other, human or divine. It is the determination to turn “ought” into “is.”
Jonathan Sacks • A Letter in the Scroll: Understanding Our Jewish Identity and Exploring the Legacy of the World's Oldest Religion
“Having faith” in Christ is not merely believing that he exists or even believing certain propositions about his nature; rather it is more than anything trusting him with one’s life.
Dale B. Martin • Biblical Truths: The Meaning of Scripture in the Twenty-first Century
If we cling to belief in God, we cannot likewise have faith, since faith is not clinging but letting go.