Every man has a natural right, not only to form his opinions for himself, but to change them as frequently as he shall believe himself led to do so. This natural right is not only sanctioned, but its exercise is approved, by the Gospel. As long as the opinions of men are not absolutely right, as long as they fall short of the truth as it will be perceived in heaven, there is room and occasion for a change; and such a change, wherever recorded in the New Testament, is recorded with approbation. Where was there ever a more extensive change of opinion than in Apollos on his conversion? Yet in his youth, Apollos was as orthodox, as undoubtedly correct in his religious opinions before the introduction of Christianity, as any Christian who now subscribes all the creeds of the Catholic Church. But what would have been the consequence if he had engaged never to 'take and interpret the Scriptures otherwise than according to the unanimous consent of the' Rabbis; or if he had promised, vowed, and sworn most constantly to profess his present faith whole and entire, with God's assistance, to the end of his life? It is true that no revelation is likely to supersede the faith of Christians; but it is, at the same time, as little probable that no developement of the principles of Christianity should cause gradual changes of opinion in the course of a lifetime, as it then was that Judaism should not be expanded into the fuller revelation of the Gospel. If, like Apollos, we believe rightly now, it is impossible to answer for no change of opinion being necessary to enable us to believe rightly twenty years hence. The view which we have already taken of the expansive tendency of the eternal principles of Christianity authorizes our declaring that a gradual enlargement of views, _i. e._ change of opinions, is a necessary consequence of the correct apprehension of religious truth.