- Abbott, Lyman
- Abelard, Peter (1079-1142)
- Act of Toleration (1689)
- Addai
- Adolphus, Gustavus (Reformation)
- Aesculapius
- Alaric
- Albigenses
- Alcuin
- Alexander, Bishop of Alexandria
- Ambrose
- American Board of Commissioners for Foreign Missions
- American Council of Christian Churches
- Anabaptists (See also "Schleitheim Confession")
- Anthony
- Anti-Semitism
- Apollinarius
- Apologists
- Apostle's Creed
- Aquinas, Thomas (1224-1274)
- Aristides
- Arius
- Arminius, Jacob (1560-1609)
- Arnauld II, Antonine
- Arnold (Abbot of Brescia, Italy)
- Arnold, Matthew
- Asbury, Francis
- Asceticism
- Athanasius
- Athenagoras
- Attila the Hun
- Augsburg Confession
- Augustine (354-430)
- Backus, Isaac
- Bainton, Roland
- Baptist Missionary Society
- Baptists
- Barbarians
- Barnabas (Apostle)
- Barth, Karl (1886-1968)
- Basil (?-379)
- Beecher, Lyman
- Benedict of Norsia
- Bernard of Clairvaux
- Bigg, Charles
- Blake, Eugene Carson
- Blaurock, George
- Bohemian Rebellion
- Boleyn, Anne
- Bonaparte, Napoleon
- Boniface
- Boniface VIII
- Book of Common Prayer
- Booth, William (1829-1912)
- Brent, Charles (1862-1929)
- British East India Company
- Bruderhof
- Bryan, William Jennings (1860-1925)
- Bucer, Martin (1491-1551)
- Bullinger, Heinrich
- Bultmann, Rudolf (1889-1996)
- Butler, Joseph
- Callistus
- Calvin, John (1509-1564)
- Camp Meetings
- Canon Law
- Carey, William
- Carter, Jimmy
- Cathari
- Catherine of Aragon
- Catholic Reformation
- Celibacy
- Celsus
- Celts
- Cerdo
- Cerinthus
- Cerularius, Michael
- Charismatic Renewal
- Charlemagne
- Charles I (1603-1642)
- Charles V
- Christian IV
- Christian Socialists
- Chrysostom, John
- Church Councils
- Church of England
- Church of Rome
- Cicero
- Clapham Sect
- Claudius
- Clement of Alexandria
- Clement of Rome
- Clement V
- Clement VII, Pope
- Clovis (481-587)
- Cold War
- Columbus, Christopher
- Communism
- Concordat (1801)
- Confessing Church
- Congregationalists
- Constantine
- Contextualization
- Cop, Nicholas
- Copernicus (1473-1543)
- Cornelius
- Cotton, John
- Council at Carthage (397)
- Council at Chalcedon (451)
- Council at Constantinople (381)
- Council at Ephesus (431)
- Council at Hippo (393)
- Counciliar Movement
- Council at Nicea (1st General) (325)
- Council at Nicea (7th General) (787)
- Council of Trent (1545-47, 1551-52, 1562-63)
- Coverdale, Miles
- Cranmer, Thomas
- Cromwell, Oliver (1599-1658)
- Crucifixion
- Crusades
- Cyprian
- Cyril
- Damasus
- Darrow, Clarence
- Darwin, Charles (1809-1882)
- Decius
- Deism
- de la Casa, Bartholomew
- Demetrius
- Denominations
- de Tocqueville, Alexis
- Dickens, Charles
- Diderot, Denis
- Diet of Speyer
- Diet of Worms
- Diocletian
- Dioscorus
- Dixon, Amzi C
- Docetism
- Dominic, Saint
- Dominicans
- Donation of Pepin
- Donatism
- Donatus
- Eastern Orthodoxy
- Ebionites
- Eck, John
- Ecumenism
- Edict of Nantes
- Edward I
- Edwards, Jonathan
- Edward VI
- Elizabeth I (1558-1603)
- Emanuel II, Victor (1849-1878)
- Engels, Friedrich (1820-1895)
- English Bible
- English Reformation (See "Church of England")
- Enlightenment
- Episcopalians
- Erasmus
- Essenes
- Eusebius of Caesarea (AD 265-330)
- Eusebius of Nicomedia
- Eutyches
- Evangelical (See also "Evangelical Awakening")
- Evangelical Alliance
- Evangelical Awakening
- Evangelical Liberalism
- Evolution
- Fall of Jerusalem
- Farel, William
- Feast of Orthodoxy
- Federal Council of Churches
- Ferdinand II
- Feudalism
- Finney, Charles
- Forty-Two Articles (1553)
- Fosdick, Harry Emerson
- Fourth Lateran Council (1215)
- Foxe, John
- Francis of Assisi (1182-1226)
- Franciscans
- Francis I
- Francke, August Hermann
- Franklin, Benjamin
- Frederick V
- Frederick the Wise
- French Revolution (1789)
- Fuller, Andrew
- Fundamentalism
- Fundamentalist Fellowship
- Galerius
- Galilei, Galileo (1564-1642)
- Gamaliel
- Gandhi, Mahatma
- Geneva Bible
- German Christians
- Gladden, Washington (1836-1918)
- Gnosticism
- Gordon, A. J.
- Graham, Billy
- Great Awakening
- Great Schism
- Grebel, Conrad
- Gregory the Great (540-604)
- Gregory of Nazianzus
- Gregory of Nyssa
- Gregory VII
- Hampton Court Conference
- Hegesipus
- Hellenism
- Henry, Carl F. H.
- Henry IV, Emperor
- Henry VIII
- Hilary
- Hildebrand
- Hitler, Adolph
- Holiness Movement
- Huguenots
- Hus, John
- Hussites
- Hutter, Jakob (died 1563)
- Hutterites
- Ignatius
- Innocent III
- Innocent X
- Inquisition
- International Missionary Conference
- Irenaeus
- James (brother of the Lord)
- James
- James I
- Jansen, Cornelius (1585-1638)
- Jansenism
- Jerome (340-420)
- Jesuits
- Jesus
- John
- John the Baptist
- John of Damascus
- John Mark
- John XXIII
- Joseph of Arimathea
- Judas Iscariot
- Julian
- Justinian
- Justin Martyr
- Kappel, Battle of
- Kepler, Johann
- Ketteler, Wilhelm
- Kimbangu, Simon
- King James Version
- Knox, John
- Lactantius (240-320)
- Lateran Treaty (1929)
- Latitudinarians
- Laud, William
- Laws, Curtis Lee
- Leipzig Debate
- Lenin (Vladmir, Ilich Ulyanov) (1870-1924)
- Leo, Bishop of Rome
- Leo III, Emperor
- Leo III, Pope
- Leo XIII, Pope (1878-1903)
- Lewis, C. S. (1898-1963)
- Liberal Theology
- Lincoln, Abraham
- Livingstone, David (1813-1873)
- Locke, John
- Lollards
- Louis XVI
- Loyola, Ignatius (1491-1556)
- Luther, Martin (1483-1546)
- Lutheranism
- Machen, J. Gresham
- Manicheanism
- Manning, Henry Edward
- Manz, Felix
- Manzikert, Battle of (1071)
- Marcion
- Marshman, Joshua
- Martel, Charles
- Marx, Karl (1818-1883)
- Mary, Queen of Scots
- Mary Tudor
- Massachusetts Bay Company
- Matthew Bible
- Matthews, Shailer
- Matthijs, Jan
- Maxentius
- Maximilla
- McGready, James
- Melanchthon, Philip
- Melito
- Mennonites
- Methodist
- Millennialism
- Modernism
- Modernist-Fundamentalist Controversy
- Monasticism
- Monophysite Church
- Montanus
- Moody, Dwight L.
- Moravians
- Mott, John R. (1865-1955)
- Munster Rebellion
- Mussolini, Benito
- National Association of Evangelicals
- Nationalism
- Nazism
- National Council of Churches
- Nero
- Nestorian Church
- Nestorius
- Newman, John Henry (1801-1890)
- Newton, Isaac (1642-1727)
- Nicene Creed
- Niebuhr, H. Richard
- Novatian
- Novationists
- Oratory of Divine Love:
- Origen:
- Oxford Movement:
- Pachomius
- Palut
- Pantanaeus
- Paphnutius
- Pascal, Blaise (1623-1662)
- Passover
- Patrick
- Paul
- Paul III, Pope (1534-1549)
- Paul VI, Pope
- Peace of Augsburg
- Peace of God
- Peace of Westphalia (1648)
- Peasant's Revolt
- Pelagius
- Pelagius II, Pope
- Pentecost
- Pentecostalism (Charismatics)
- Pepin the Short (741-768)
- Persecution
- Peter
- Pharisees
- Philip
- Philip the Fair
- Philo
- Philosophes
- Pietists
- Pilate, Pontius
- Pilgrims
- Pius IX, Pope (1846-1878)
- Pius XI, Pope
- Pius XII, Pope
- Pizarro, Francisco
- Pliny
- Polycarp
- Premillennialism
- Presbyterians
- Prisca
- Prohibition
- Protestantism
- Puritanism
- Quakers
- Rauschenbusch, Walter (1861-1918)
- Reform Act (1832)
- Reformation
- Reformed Christianity
- Renaissance
- Resurrection
- Revival
- Ricci, Matthew (1552-1610)
- Richard the Lion-Hearted
- Risorgimento
- Ritschl, Albrecht (1822-1889)
- Robinson, John
- Rogers, John
- Romanticism
- Royalist Party
- Russian Orthodox Church
- Sadducees
- Saladin
- Salvation Army
- Sattler, Michael
- Schall, Adam
- Schleiermacher, Friedrich (1763-1834)
- Schleitheim Confession
- Schmalkald League
- Scholasticism
- Schweitzer, Albert
- Scopes, John
- Second Great Awakening
- Secularism
- Separatism, English
- Serapion
- Servetus, Michael
- Seymour, Jane
- Simons, Menno (c. 1496-1561)
- Slavery
- Smyth, John
- Social Gospel
- Society of Jesus
- Soderblom, Nathan (1866-1931)
- Spener, Philip (1635-1705)
- Stalin, Joseph
- Statute of Six Articles (1539)
- St. Bartholomew's Day Massacre
- Stephen
- Stowe, Harriet Beecher
- Supremacy Act (1534)
- Sylvester II
- Tatian
- Tertullian
- Tetzel, John
- Theodosius
- Theophilus of Antioch
- Third Lateran Council (1179)
- Thirty-Nine Articles (1563)
- Thirty Years War (1618-1648)
- Thomas
- Totalitarianism
- Trajan
- Trevelyan, G. M.
- Troeltsch, Ernst
- Truce of God
- Tyndale, William
- Ulfilas (Wulfila)
- United Nations
- Universities
- Urban II, Pope
- Urban VI, Pope
- Valentinians
- Valentius
- Valignani, Allessandro
- Vatican Council I (1870)
- Vatican Council II
- Victorinus
- Visser't Hooft, Willem Adolph
- Voltaire (1694-1778)
- Voluntaryism
- Voluntary Society
- Von Bora, Katherine
- von Holbach, Baron
- Waldenses
- Waldo, Peter (1140-1218)
- Ward, William
- World Council of Churches
- Wesley, Charles
- Wesley, John (1703-1791)
- Western Christianity
- Westminster Assembly (1642-1649)
- Westminster Confession of Faith
- Whitby, Synod of
- Whitefield, George
- Wilberforce, William (1759-1833)
- Williams, Charles
- William, The Silent
- Wilson, Woodrow
- Wolsey, Thomas
- Wycliffe, John
- Xavier, Francis (1506-1552)
- Zealots
- Zinzendorf, Count Nikolaus von (1700-1760)
- Zwingli, Ulrich (1484-1531)
