Born 1931; studied Protestant Theology in Bethel, Mainz, and Cambridge (UK); 1957 PhD; 1966 Habilitation; 1963-78 Professor of New Testament at the School of Theology in Claremont, California; since 1978 Shailer Mathews Professor of New Testament and Early Christian Literature at the University of Chicago; since 2000 emeritus.

Born 1931; studied Protestant Theology in Bethel, Mainz, and Cambridge (UK); 1957 PhD; 1966 Habilitation; 1963-78 Professor of New Testament at the School of Theology in Claremont, California; since 1978 Shailer Mathews Professor of New Testament and Early Christian Literature at the University of Chicago; since 2000 emeritus.

Born 1931; studied Protestant Theology in Bethel, Mainz, and Cambridge (UK); 1957 PhD; 1966 Habilitation; 1963-78 Professor of New Testament at the School of Theology in Claremont, California; since 1978 Shailer Mathews Professor of New Testament and Early Christian Literature at the University of Chicago; since 2000 emeritus.