Contains over 500 entries covering "events, doctrines, individuals, theories, and schools of thought that comprise the study of the Christian religion across all of its denominations." Coverage includes:

• Essential theological doctrines and concepts such as Apostolic Succession; Attributes, Divine; Christ and Christology; Exegesis, Filioque; Grace; Incarnation; Justification; Original Sin; Passion; Predestination; and Resurrection of the Dead
• Influential thinkers including Peter Abelard, Augustine of Hippo, Dietrich Bonhoeffer, John Calvin, Jonathan Edwards, Desiderius Erasmus, Gregory the Great, Martin Luther, and Paul Tillich
• Movements and schools of thought such as Arianism; Ecumenism; Erastianism; Gallicanism; Liberation Theology; Scholasticism; Thomism; and Unitarianism; church councils throughout history, from Nicaea to Vatican II