The first course of stone that we lay is Faith; and that course is, as it were, mortised into the foundation, the living Rock. He that builds on Christ cannot build but by faith. The two representations are complementary to one another, the one, which represents Jesus Christ as the foundation, stating the ultimate fact, and the other, which represents faith as the foundation, stating the condition on which we come into vital contact with Christ Himself.
Then, further, in this great thought of the Christian life being substantially a building up of oneself on Jesus is implied the need for continuous labour. You cannot build up a house in half an hour. You cannot do it, as the old fable told us that Orpheus did, by music, or by wishing. There must be dogged, hard, continuous, life-long effort if there is to be this building up. No man becomes a saint _per saltum_. No man makes a character at a flash. The stones are actions; the mortar is that mystical, awful thing, habit; and deeds cemented together by custom rise into that stately dwelling-place in which God abides. So, there is to be a life-long work in character, gradually rearing it into His likeness.
The metaphor also carries with it the idea of orderly progression. There are a number of other New Testament emblems which set forth this notion of the true Christian ideal as being continual growth. For instance, 'first the blade, then the ear, then the full corn in the ear,' represents it as resembling vegetable growth, while elsewhere it is likened to the growth of the human body. Both of these are beautiful images, in that they suggest that such progressive advancement is the natural consequence of life; and is in one aspect effortless and instinctive.
But then you have to supplement that emblem with others, and there comes in sharp contrast to it the metaphor which represents the Christian progress as being warfare. There the element of resistance is emphasised, and the thought is brought out that progress is to be made in spite of strong antagonisms, partly to be found in external circumstances, and partly to be found in our own treacherous selves. The growth of the corn or of the body does not cover the whole facts of the case, but there must be warfare in order to growth.
There is also the other metaphor by which this Christian progress, which is indispensable to the Christian life, and is to be carried on, whatever may oppose it, is regarded as a race. There the idea of the great, attractive, but far-off future reward comes into view, as well as the strained muscles and the screwed-up energy with which the runner presses towards the mark. But we have not only to fling the result forward into the future, and to think of the Christian life as all tending towards an end, which end is not realised here; but we have to think of it, in accordance with this metaphor of my text, as being continuously progressive, so as that, though unfinished, the building is there; and much is done, though all is not accomplished, and the courses rise slowly, surely, partially realising the divine Architect's ideal, long before the headstone is brought out with shoutings and tumult of acclaim. A continuous progress and approximation towards the perfect ideal of the temple completed, consecrated, and inhabited by God, lies in this metaphor.
Is that _you_, Christian man and woman? Is the notion of progress a part of _your_ working belief? Are _you_ growing, fighting, running, building up yourselves more and more in your holy faith? Alas! I cannot but believe that the very notion of progress has died out from a great many professing Christians.
There is one more idea in this metaphor of self-edification, viz., that our characters should be being modelled by us on a definite plan, and into a harmonious whole. I wonder how many of us in this chapel this morning have ever spent a quiet hour in trying to set clearly before ourselves what we want to make of ourselves, and how we mean to go about it. Most of us live by haphazard very largely, even in regard to outward things, and still more entirely in regard to our characters. Most of us have not consciously before us, as you put a pattern-line before a child learning to write, any ideal of ourselves to which we are really seeking to approximate. Have you? And could you put it into words? And are you making any kind of intelligent and habitual effort to get at it? I am afraid a great many of us, if we were honest, would have to say, No! If a man goes to work as his own architect, and has a very hazy idea of what it is that he means to build, he will not build anything worth the trouble. If your way of building up yourselves is, as Aaron said his way of making the calf was, putting all into the fire, and letting chance settle what comes out, nothing will come out better than a calf. Brother! if you are going to build, have a plan, and let the plan be the likeness of Jesus Christ. And then, with continuous work, and the exercise of continuous faith, which knits you to the foundation, 'build up yourselves for an habitation of God.'