spread through every rank of the order sacred."--(Mosheim, "Ecclesiastical History," Cent. III, Part II, ch. 2:3, 4.) CHAPTER VII. **Internal Causes.--Continued**. 1. First among the specific causes of disturbance operating within the Church, and contributing to its apostasy, we have named: "_The corrupting of the simple principles of the gospel by the admixture of the so-called philosophic systems of the times_." 2. The attempted grafting of foreign doctrines on the true vine of the gospel of Christ was characteristic of the early years of the apostolic period. We read of the sorcerer Simon, who professed belief and entered the Church by baptism, but who was so devoid of the true spirit of the gospel that he sought to purchase by money the authority and power of the priesthood.--(See Acts 8:9, 13, 18-24.) This man, though rebuked by Peter, and apparently penitent, continued to trouble the Church, by inculcating heresies and winning disciples within the fold. His followers were distinguished as a sect or cult down to the fourth century; and, writing at that time, Eusebius says of them: "These, after the manner of their founder, insinuating themselves into the Church, like a pestilential and leprous disease, infected those with the greatest corruption, into whom they were able to infuse their secret, irremediable, and destructive poison."--(Eusebius, "Ecclesiastical History," Book II, ch. 1.) This Simon, known in history as Simon Magus, is referred to by early Christian writers, as the founder of heresy, owing to his persistent attempts to combine Christianity with Gnosticism. It is with reference to his proposition to purchase spiritual authority that all traffic in spiritual offices has come to be known as simony. 3. Through the mouth of the Revelator, the Lord reproved certain of the churches for their adoption or toleration of doctrines and practices alien to the gospel. Notably is this the case with respect to the Nicolaitanes, and the followers of the doctrines of Balaam.--(See Rev. 2:15; compare verse 6; see also verse 20. See Note 1, end of chapter.) 4. The perversion of true theology thus developed within the Church is traceable to the introduction of both Judaistic and pagan fallacies.--(See Note 2, end of chapter.) Indeed, at the opening of the Christian era and for centuries thereafter, Judaism was more or less intimately mixed with pagan philosophy, and contaminated with heathen ceremonies. There were numerous sects and parties, cults and schools, each advocating rival theories as to the constitution of the soul, the essence of sin, the nature of Deity, and a multitude of other mysteries. The Christians were soon embroiled in endless controversies among themselves.