There have ever been two classes among those who profess to be followers of Christ. While one class study the Saviour’s life and earnestly seek to correct their defects and to conform to the Pattern, the other class shun the plain, practical truths which expose their errors. Even in her best estate the church was not composed wholly of the true, pure, and sincere. Our Saviour taught that those who willfully indulge in sin are not to be received into the church; yet He connected with Himself men who were faulty in character, and granted them the benefits of His teachings and example, that they might have an opportunity to see and correct their errors. (SR 323.1) MC VC

But there is no union between the Prince of light and the prince of darkness, and there can be no union between their followers. When Christians consented to unite with those who were but half converted from paganism, they entered upon a path which led farther and farther from the truth. Satan exulted that he had succeeded in deceiving so large a number of the followers of Christ. He then brought his power to bear more fully upon them, and inspired them to persecute those who remained true to God. None could so well understand how to oppose the true Christian faith as could those who had once been its defenders; and these apostate Christians, uniting with their half-pagan companions, directed their warfare against the most essential features of the doctrines of Christ. (SR 323.2) MC VC