The union between Christ and the church is a great mystery… Let us not presume to measure it with the line of our own reason. It being a great mystery, it is above our capacity. Yet because it is revealed, we must believe it, as we do the mystery of the Trinity, of Christ’s eternal generation, of the personal union of his two natures, of the proceeding of the Holy Ghost… because the Word has revealed them… Here we must believe what we know but in part; there, we shall perfectly know whatsoever is to be believed. Preachers can but in part make known this mystery, and hearers can in part conceive  it. Let us, therefore, wait for perfect understanding of it…  but meantime believe without doubting that which is revealed…
—Wiliam Gouge “Domestic Duties”