But the lesson is not less clear from analogy. Apart even from the law of Degeneration, apart from Reversion to Type, there is in every living organism a law of Death. We are wont to imagine that Nature is full of Life. In reality it is full of Death. One cannot say it is natural for a plant to live. Examine its nature fully, and you have to admit that its natural tendency is to die. It is kept from dying by a mere temporary endowment which gives it an ephemeral dominion over the elements--gives it power to utilize for a brief span the rain, the sunshine, and the air. Withdraw this temporary endowment for a moment and its true nature is revealed. Instead of overcoming Nature it is overcome. The very things which appeared to minister to its growth and beauty now turn against it and make it decay and die. The sun which warmed it, withers it; the air and rain which nourished it, rot it. It is the very forces which we associate with life which, when their true nature appears, are discovered to be really the ministers of death. This law, which is true for the whole plant-world, is also valid for the animal and for man. Air is not life, but corruption--so literally corruption that the only way to keep out corruption, when life has ebbed, is to keep out air. Life is merely a temporary suspension of these destructive powers; and this is truly one of the most accurate definitions of life we have yet received--"the sum total of the functions which resist death." Spiritual life, in like manner, is the sum total of the functions which resist sin. The soul's atmosphere is the daily trial, circumstance, and temptation of the world. And as it is life alone which gives the plant power to utilize the elements, and as, without it, they utilize it, so it is the spiritual life alone which gives the soul power to utilize temptation and trial; and without it they destroy the soul. How shall we escape if we refuse to exercise these functions--in other words, if we neglect? This destroying process, observe, goes on quite independently of God's judgment on sin. God's judgment on sin is another and a more awful fact of which this may be a part. But it is a distinct fact by itself, which we can hold and examine separately, that on purely natural principles the soul that is left to itself unwatched, uncultivated, unredeemed, must fall away into death by its own nature. The soul that sinneth "it shall die." It shall die, not necessarily because God passes sentence of death upon it, but because it cannot help dying. It has neglected "the functions which resist death" and has always been dying. The punishment is in its very nature, and the sentence is being gradually carried out all along the path of life by ordinary processes which enforce the verdict with the appalling faithfulness of law.