The Romanists assail us in the present day, and terrify the unskilful with the name of Church, while they are the deadly adversaries of Christ. Therefore, although they exhibit a temple, a priesthood, and other similar masks, the empty glare by which they dazzle the eyes of the simple should not move us in the least to admit that there is a Church where the word of God appears not. — John Calvin
The same, to be fair, could be said of the Emergents and the Seekers and other pseudo-Christian sects today. Simply claiming to be ‘Church’ doesn’t make it so. Where Scripture is absent, where it is ignored, the Church doesn’t exist.