Rudolf Bultmann was a German theologian and philosopher who is widely regarded as one of the most important figures in 20th-century theology. Bultmann's work was primarily concerned with the relationship between faith and reason, and his ideas have had a profound impact on Christian theology and philosophy. Some synonyms for Bultmann might include "existentialist theologian," "New Testament scholar," or "biblical exegete." Other possible synonyms might include "hermeneutic philosopher," "anti-metaphysician," or "dialectical theologian." Regardless of the specific term used to describe Bultmann's work, it remains a crucial part of modern theology and philosophy and continues to inspire new generations of thinkers.