Few things preoccupied the medieval Christian church more than the notion of sin: because of mankind’s propensity to corruption the...

The Catholic Reformation, or Renewal began with the Council of Trent 1545 to 1563, and endeavoured to update the Catholic Church to an...

The Council of Nicaea was the first ecumenical council of Christendom, held from May to August of AD 325. Emperor Constantine the Great...