(c) The prevailing current of this age is all in the same direction. The growth of luxury, the increase of wealth, and set of thought, threaten us with a period when not only religious thought will fail, but when all faith, enthusiasm, all poetry and philosophy, the very conception of God and duty, all idealism, all that is unseen, will be scouted among men. Naturalism does not fulfil its own boast of dealing with facts; there are more facts than can be seen. So the first thing is to settle it in our minds, in opposition to our own selves and to prevailing tendencies, that truth is better than money, that pure affections and moderate desires and a heart set on God are richer wealth than all external possessions.
2. Desire that follows the corrected judgment. It is one thing to know all this, another to wrench our wishes loose from earth.
3. A practical life that obeys the impulse of the desire. Christ's command and prohibition here do not refer only to a certain course of action, but to a certain motive and purpose in action, and to actions drawn from these. If we obey Christ we shall lead lives obviously different from those which are based upon an estimate which we are to reject; but the main thing is to live and work with an eye to the eternal, not the temporal, results of our doings. We are to administer our lives as God does His providence, using the temporal only as means to an end, the eternal. We are to live to be God-like, to love God, and be loved by Him.
There is here the idea of which we are somewhat too much afraid, that our life on earth adds to the rewards of blessedness in heaven. The idea of reward is emphatically and often inculcated in Scripture, however much a mistaken jealousy for 'the doctrines of Grace' may be chary of it. We need only recall such words as 'They shall walk with Me in white, for they are worthy'; or, 'Laying up in store for themselves a good foundation'; or, 'Thou shalt have treasure in heaven.' If people would only think of heaven less carnally, and would regard it as the perfection of holiness, there would be no difficulty in the notion of reward. Men get there what they have made themselves fit for here. 'Their works do follow them.'
II. The foes of the earthly, which are powerless against the heavenly.
The imagery implies a comparatively simple state of society and primitive treasures. Moths gnaw rich garments. Rust, or more properly corruption, would get into a man's barns and vineyards, hay-crops and fruits. Thieves would steal the hoard that he had laid by, for want of better investment. Or to generalise, corruption, the natural process of wearing away, natural enemies proper to each kind of possession, human agency which takes away all external possessions—these multifarious agents co-operate to render impossible the permanent possession of any 'treasure on earth.'
On the other hand, what a man has laid up in heaven, and what he is partially here, have no tendency to grow old. Men never weary of God, never find Him failing, never exhaust truth, never drink the love of God to the dregs, never find purity palling upon the taste, 'Age cannot wither, nor custom stale, "their" infinite variety.'
'Treasure in heaven' has no enemies which destroy it. Every earthly possession has its own foes, every earthly joy has its own destructive opposite; but nothing touches this treasure in heaven.
It has nothing to fear from men. Nobody can take it out of a man's soul but himself. The inmost circle of our life is inviolable. It is incorruptible and undefiled and fadeth not away, for it all comes from the eternal God and our eternal union to Him. He is our portion for ever.
III. The madness of fastening the heart down to earth.