How did Martin Buber compare Judaism and Christianity in Two Types of Faith?

In his work Zwei Glaubensweisen (1950), translated as Two Types of Faith, Martin Buber distinguished between two religious approaches to God based on their fundamental nature.1

Buber identified these types through two distinct terms:

• Emuna: Derived from the Hebrew word for trust, this represents a relationship of mutual confidence between God and man, characterized by the I–Thou encounter. Buber viewed Judaism as the classical example of this type.1
• Pistis: Derived from the Greek word for faith, this refers to the belief in the factuality of specific events within salvation history, such as the life, death, and Resurrection of Jesus. Buber identified Christianity as the classical example of this type.1

While Buber categorized these as distinct religious types, he acknowledged that historical Judaism contained elements of pistis and historical Christianity contained elements of emuna. His analysis served as a significant contribution to the Jewish–Christian dialogue, fostering a space for open discourse despite their theological differences.1