If we are the successors of the apostles, the apostles were the successors of the prophets, who did for the Church of the Old Testament what the apostles did for that of the New. In outward aspect and detail, indeed, the life of the prophets differed much from that of the apostles. In force of manhood and in variety and brilliance of genius they far excelled them. But their aim was the same. It was to make the kingdom of God come by announcing and enforcing the mind and will of God. And this is our aim too.
The writings of the prophets are very difficult, and their period is less popularly known than any other period of Scripture history, either before or after it. But it is beginning to attract more attention, and in the near future it will do so much more, because it is beginning to be perceived that in it lies the key to the whole Old Testament history and literature.[3] The writings of Isaiah especially have of late attracted attention. Commentary after commentary on them has appeared;[4] till now the reader can see his way pretty clearly through the tangled but enchanting mazes of his writings. With such helps as have been available to me I have endeavoured through the writings to get at the man; and I will take Isaiah as the representative of the prophetic spirit in the same way as St. Paul is to represent for us the apostles. But here again my aim is neither that of the commentator nor that of the biographer. It is the soul of the man I wish to depict and the spirit of his work.
It may be thought that, by taking up the subject in this way, I am missing the opportunity of dealing with the practical work of to-day. But I do not think so. There are, indeed, some details nearly always discussed in lectures on preaching which I do not care to touch. There is, for instance, the question of the delivery of sermons--whether the preacher should read, or speak _memoriter_, or preach _extempore_. This can be discussed endlessly, and the discussion is always interesting; but, if it were discussed every year for a century, it would be as far from being settled as ever. Besides, it is my duty to remember what others have handled exhaustively here before me. Indeed, the Senate mentioned to me that it was desirable that the subject should be taken up from a new point of view. They have been good enough to express their approbation of the way in which I mean to treat it; but it is not in deference to their instructions that I take it up in this way, but in accordance with the bent of my own mind; and I think I see my way to bring to bear on it all the practical experience which I may be in possession of; for I quite recognise that the value of such a course of lectures largely depends on its being, from beginning to end, what in literature is called a Confession, that is, a record of experiences. Although I am to go back to the ages of the apostles and the prophets, I do not intend to stay there. My wish is to bring down from thence fire which will kindle your hearts, as you face the world and the tasks of to-day.
There is another objection, which may have already occurred to some of you, and would doubtless occur to many, as I went along, if I did not anticipate it. It may be felt, that both apostles and prophets were so differently situated from us, especially through the possession of the gift of inspiration, that they can be no example for us to follow. To this I will not reply by seeking in any way to minimise their inspiration. It is, indeed, difficult to say exactly how their inspiration differed from that which is accessible and indispensable to us; for we also are entirely dependent for the power and success of our work on the same Spirit as spoke through them. But, however difficult it may be to define it, I am one of those who believe that there is a difference, and that it is a great difference. The mind and will of God expressed themselves through the prophets and apostles with a directness and authority which we cannot claim. But the difference is not such as to remove them beyond our imitation. Although in some, or even many, respects they may be beyond us, this is no reason why we may not in others imitate them with the greatest advantage. It will be seen at a glance how little there is in this objection, if it be considered that our Lord Himself is the great pattern of the ministry. In some respects He is of course much farther away from us than either prophets or apostles; yet He is near us as a model in every detail of our duty. No mode of treating my subject would have been so congenial to me as to set Him forth in this character. But, having attempted to do so elsewhere, I have chosen the method now announced under the conviction, that the nearest approach to the study of how Christ fulfilled the duties of the ministry is to study how prophets and apostles fulfilled them.