The theological books went to the jumble sale; political science took their place.

It is no secret that preachers refer to theological books when they prepare sermons.

Using prison as an opportunity to better himself, he read theological books; became superintendent of the prison Sunday school; and studied law.

He wrote many articles and authored 24 theological books.

From 1610 on, and already in poor health, he turned towards writing ascetical and theological books that had also much success.

He also wrote a number of theological books.

Throughout his life, both ministerial and professorial, he devoted much time to the publication of theological books.

He wrote many international historical and theological books.

He was widely read and already taking an interest in theological and philosophical books.

There, for 20 years, Job served as hegumen (abbot) and engaged himself in the writing of theological books.