The unity of the church, and expediency of forms of prayer : Illustrated in two treatises compos'd by St. Cyprian the Martyr. To which is prefix'd, a large preface, shewing that Christians of all denominations, whether papists or protestants, are oblig'd to heal and compose the divisions of Christendom, and thereby restore to themselves the name of the one catholick and Apostolick Church. With a prayer for the dead, and a paraphrase on the Lord's-prayer; by the Late Pious and learned Dr. Grabe.