In our discussion of the unity of the visible Church, it already became apparent that the Reformers and the Reformed Confessions expressed their belief in a catholic visible Church, and this opinion has been reiterated by Dutch, Scottish, and American Reformed theologians right up to the present time, though in recent years some in the Netherlands expressed doubt about this doctrine. It mus be admitted that this doctrine presents many difficult problems, which still call for solution. It is not easy to point out with precision just where this one catholic visible Church is. Furthermore, such questions as these arise: (1) Does this doctrine carry with it a wholesome condemnation of denominationalism, as Dr. Henry Van Dyke seems to think? (2) Does it mean that some one denomination is the true Church, while all others are false, or is it better to distinguish between Churches of more or less pure formation? (3) At what point does a local church or a denomination cease to be an integral part of the one visible Church? (4) Is a single external institution or organization essential to the unity of the visible Church, or not? These are some of the problems that still call for further study.
