Lastly; the nature of the case affords a strong proof, that the original teachers of Christianity, in consequence of their new profession, entered upon a new and singular course of life. We may be allowed to presume, that the institution which they preached to others, they conformed to in their own persons; because this is no more than what every teacher of a new religion both does, and must do, in order to obtain either proselytes or hearers. The change which this would produce was very considerable. It is a change which we do not easily estimate, because, ourselves and all about us being habituated to the institutions from our infancy, it is what we neither experience nor observe. After men became Christians, much of their time was spent in prayer and devotion, in religious meetings, in celebrating the Eucharist, in conferences, in exhortations, in preaching, in an affectionate intercourse with one another, and correspondence with other societies. Perhaps their mode of life, in its form and habit, was not very unlike the Unitas Fratrum, or the modern methodists. Think then what it was to become such at Corinth, at Ephesus, at Antioch, or even at Jerusalem. How new! How alien from all their former habits and ideas, and from those of everybody about them! What a revolution there must have been of opinions and prejudices to bring the matter to this!
We know what the precepts of the religion are; how pure, how benevolent, how disinterested a conduct they enjoin; and that this purity and benevolence are extended to the very thoughts and affections. We are not, perhaps, at liberty to take for granted that the lives of the preachers of Christianity were as perfect as their lessons; but we are entitled to contend, that the observable part of their behaviour must have agreed in a great measure with the duties which they taught. There was, therefore, (which is all that we assert,) a course of life pursued by them, different from that which they before led. And this is of great importance. Men are brought to anything almost sooner than to change their habit of life, especially when the change is either inconvenient, or made against the force of natural inclination, or with the loss of accustomed indulgences. It is the most difficult of all things to convert men from vicious habits to virtuous ones, as every one may judge from what he feels in himself, as well as from what he sees in others.* It is almost like making men over again.