”The rise of sectarianism that has accompanied the Protestant movement is a dark and negative phenomenon. It manifested itself already at the beginning of the Reformation, but it has never flourished as it has in our age. New church after new church is established. In England there are already more than two hundred sects. In America they are innumerable. The differences have become so many and so insignificant that one cannot keep track of them. There are even voices arguing for a new discipline in theology itself devoted to the comparative history of church confessions. What is even more serious is that this sectarianism leads to the erosion and disappearance of church consciousness. There is no longer an awareness of the difference between the church and a voluntary association. The sense that separation from the church is a sin has all but disappeared. One leaves a church or joins it rather casually. When something or other in a church no longer satisfies us, we look for another without any pangs of conscience. The decisive factor turns out to be our taste. Exercise of discipline thus becomes virtually impossible; it loses its very character. What preacher is left who dares, in good conscience, except perhaps in extremely rare instances, to use the form for excommunication? The worst result of all this is that by breaking the unity of doctrine and the church, Christians do violence to the communion of saints, deprive themselves of the Spirit’s gifts of grace, by which other believers labor to build up the saints, shut themselves up in their own circle, promote spiritual pride, strengthen Rome, and give the world occasion for scorn and mockery.”
-Herman Bavinck, “The Catholicity of Christianity and the Church”
West Port Experiment 