"Implicit faith" refers to having complete trust and belief in something or someone without requiring evidence or proof. It means having faith without questioning or doubting. Full definition
What happens to a marriage when even implicit faith is lacking in it? (firstthings.com)
Just as implicit faith in science has been called scientism, so this trust and confidence which people put in modernity may be called modernism, a term found as early as the eighteenth century. (religion-online.org)
He illustrates the idea of implicit faith with Karl Rahner's notion of the anonymous Christian. (religion-online.org)