One true church
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The expression "one true church" refers to an ecclesiological position asserting that Jesus gave his authority in the Great Commission solely to a particular visible Christian institutional church—wha
Stained glass window in a Catholic church depicting St. Peter's Basilica in Rome sitting "Upon this rock," a reference to Matthew 16:18
...one holy Church is to continue forever. The Church is the congregation of saints, in which the Gospel is rightly taught and the Sacraments are rightly administered. — Augsburg Confession
Graph from The Trail of Blood, a popular Baptist book that teaches the doctrine of Baptist successionism.
An Amish family in Lyndonville, New York.
Christian Church
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In ecclesiology, the Christian Church is what different Christian denominations conceive of as being the true body of Christians or the original institution established by Jesus Christ. "Christian Chu
An Eastern icon depicting the Descent of the Holy Spirit. The date of Pentecost is considered the "Birthday of the Church".
Medieval illustration of the ecclesia from the Hortus deliciarum of Herrad of Landsberg (12th century)
An icon depicting Constantine I, accompanied by the bishops of the First Council of Nicaea (325), holding the Niceno–Constantinopolitan Creed of 381.