Part 1 of Essay
A heresy which arose in the fourth century, and denied the Divinity of Jesus Christ. DOCTRINE First among the doctrinal disputes which troubled Christians after Constantine had recognized the Church in A.D. 313, and the parent of many more during some three centuries, Arianism occupies a large place in ecclesiastical hist ....

Part 2 of Essay
.... It is reiterated in the Letters of Ignatius, and accounts for Pliny's observation that Christians in their assemblies chanted a hymn to Christ as God. But the question how the Son was related to the Father (Himself acknowledged on all hands to be the one Supreme Deity), gave rise, between the years A. D. 60 and 200, to number of Theosophic systems, called generally Gnosticism, and having for their authors Basilides, Valentinus, Tatian, and other Greek speculators. Though all of these visited Rome, they had ....