I believe in God, the Father, the Son, and the Holy Spirit. This ancient confession of Christians raises more questions today than it answers. What do the terms and formulas contained within it mean? Do they still have relevance for the lives of people today? Theodor Schneider explores the fundamental statements of the Christian faith through the lens of the confession of faith and interprets them from the perspective of contemporary theology. This creates a comprehensive picture that uncovers the biblical foundations and historical developments of the statements of faith, allowing for new, meaningful approaches to the "old" formulas in today's context.