TM7, if I may split a hair ...
Classics are not required for one's Christian faith.
However, a classical education (which included civics, morality, latin, greek, philosophy, theology) was what education was for our forefathers. So when they put pen to paper, they did so having read the scriptures in original languages, studied the gnostic philosophies John and Paul combatted, read the Latin classics that were so formative in the development of the ideas of a "republic" and a "democracy." Inarguably it made for a much deeper appreciation for the Christian faith, and it enabled them to translate that faith into public practice in real and meaningful ways. It was also the path to become a professional: Doctor, Lawyer, Pastor. All other trades were filled by apprenticeship (OJT).