The building of the tower represents what every human life ought to aim at, the rearing up of a strong, solid structure in which the builder may dwell and be at rest.
But then remember we are always building, consciously or unconsciously. By our transitory actions we are all rearing up a house for our souls in which we have to dwell; building character from out of the fleeting acts of conduct, which character we have to carry with us for ever. Soft invertebrate animals secrete their own shells. That is what we are doing--making character, which is the shield of self, as it were; and in which we have to abide.
My friend, what are you building? A prison; a mere garden-house of lustful delights; or a temple fortress in which God may dwell reverenced, and you may abide restful? Observe that whilst all men are thus unconsciously and habitually rearing up a permanent abode by their transient actions, every life that is better than a brute's ought to have for its aim the building up of ourselves into firm strength. The development of character is what we ought to ask from, and to secure by, this fleeting life of ours. Not enjoyment; that is a miserable aim. Not the satisfaction of earthly desires; not the prosperity of our business or other ordinary avocations. The demand that we should make upon life, and the aim which we should have clearly before us in all that we do, is that it may contribute to the formation of a pure and noble self, to the development of character into that likeness to Jesus Christ, which is perfection and peace and blessedness.
And while that is true about all life, it is eminently true in regard to the highest form of life, which is the Christian life. There are dreadful mistakes and imperfections in the ordinary vulgar conception of what a Christian is, and what he is a Christian for. What do you think men and women are meant to be Christians for? That they may get away from some material and outward hell? Possibly. That they may get celestial happiness? Certainly. But are these the main things? By no means. What people are meant to be Christians for is that they may be shaped into the likeness of Jesus Christ; or to go back to the metaphor of my text, the meaning and aim of Christian discipleship is not happiness, but the building up of the tower in which the man may dwell.
Ah, friend; is that your notion of what a Christian is; and of what he is a Christian for, to be like the Mastery Alas! alas! how few of us, honestly and continually and practically, lay to heart the stringent and grand conception which underlies this metaphor of our Lord's, who identifies the man that was thinking of being His disciple with the man that sits down intending to build a tower.