Nearly all his important works are in the nature of historical theology.

From 1872 to 1884 he was professor of historical theology in New College, Hampstead.

Besier taught historical theology at Heidelberg University from 1992 to 2003.

His main contribution to the field of historical theology is his radical attempt to read sources non-anachronistically.

His writings focus on historical theology and apologetics.

He lectured and written extensively in the areas of historical theology, ecumenism, and spirituality.

The current president is Peter Lillback, who also serves as a professor of Historical Theology.

He specializes in analytic theology, philosophical theology, and historical theology.

Spinoza determined to remove politics from contemporary and historical theology (e.g. disregarding Judaic law).

Historical Theology, An Introduction to the History of Christian Thought.