“Let us review. Because no man has been saved in any way other than through the grace of God since the fall, the Reformed considered that there had been only one covenant of grace in the whole history of redemption. The covenant of grace was the substance by which seventeenth-century theologians united the Bible, from whence came their paradigm: one covenant under several administrations. In establishing a distinction between the internal substance and the external administration of the covenant of grace, the Presbyterians managed to maintain the unity of this covenant while admitting a certain disparity between”