The English Reader is here presented with a translation of one of the principal theological productions of the sixteenth century. Few persons, into whose hands this translation is likely to fall, will require to be informed that the Author of the original work was one of an illustrious triumvirate, who acted a most conspicuous part in what has been generally and justly denominated THE REFORMATION. Of that important revolution in ecclesiastical affairs, so necessary to the interests of true religion, and productive of such immense advantages even to civil society, LUTHER, ZUINGLE, and CALVIN, were honoured, by the providence of God, to be the most highly distinguished instruments. It is no degradation to the memory of the many other ornaments of that age, to consider them as brilliant satellites in the firmament of the Church, revolving round these primary luminaries, to whom they were indebted for much of that lustre which they diffused over the earth; while they were all together revolving around one and the same common centre, though, it must be confessed, with considerable varieties of approximation, velocity, and obliquity in their courses; yet all deriving more or less copious communications of light from the great Sun of the moral system, THE TRUE LIGHT OF THE WORLD. Differing in the powers of their minds, as well as in the temperament of their bodily constitutions, placed in different circumstances, and called to act in different scenes, these leading Reformers, though engaged in the same common cause, displayed their characteristic and peculiar excellences; which, it is no disparagement of that cause to admit, were likewise accompanied by peculiar failings. It is not the design of this preface to portray and discriminate their respective characters. They alike devoted their lives and labours to rescue Christianity from the absurdities, superstitions, and vices by which it had been so deplorably deformed, mutilated, and obscured, and to recall the attention of mankind from the doubtful traditions of men to the unerring word of God. But while they were all distinguished Reformers, Calvin has been generally acknowledged to have been the most eminent theologian of the three. Such was the superiority of the talents and attainments of Calvin to those of most other great men, that the strictest truth is in danger of being taken for exaggeration. It is impossible for any candid and intelligent person to have even a slight acquaintance with his writings, without admiring his various knowledge, extensive learning, profound penetration, solid judgment, acute reasoning, pure morality, and fervent piety.