<p>There is an important truth of which thousands of men are ignorant; or if they know it, they reflect upon it seldom, and with but little fruit. Yet the knowledge of this truth is almost as necessary for all those who have attained the age of reason, as the knowledge of the mysteries of the Trinity and Incarnation. The importance of this great truth seems to be a mystery not merely to the heathen, Jews and heretics, but even to the greater part...