First, we have an example of that wholesome self-distrust, which a glimpse into the possibilities of evil that lie slumbering in all our hearts ought to teach every one of us.
Every man is a mystery to himself. In every soul there lie, coiled and dormant, like hibernating snakes, evils that a very slight rise in the temperature will wake up into poisonous activity. And let no man say, in foolish self-confidence, that any form of sin which his brother has ever committed is impossible for him. Temperament shields us from much, no doubt. There are sins that we are inclined to,' and there are sins that we have no mind to.' But the identity of human nature is deeper than the diversity of temperament, and there are two or three considerations that should abate a man's confidence that anything which one man has done it is impossible that he should do. Let me enumerate them very briefly. Remember, to begin with, that all sins are at bottom but varying forms of one root. The essence of every evil is selfishness, and when you have that, it is exactly as with cooks who have the stock' by the fireside. They can make any kind of soup out of it, with the right flavouring. We have got the mother tincture of all wickedness in each of our hearts; and therefore do not let us be so sure that it cannot be manipulated and flavoured into any form of sin. All sin is one at bottom, and this is the definition of it--living to myself instead of living to God. So it may easily pass from one form of evil into another, just as light and heat, motion and electricity, are all--they tell us--various forms and phases of one force. Just as doctors will tell you that there are types of disease which slip from one form of sickness into another, so if we have got the infection about us it is a matter very much of accidental circumstances what shape it takes. And no man with a human heart is safe in pointing to any sin, and saying, That form of transgression I reckon alien to myself.'
And then let me remind you, too, that the same consideration is reinforced by this other fact, that all sin is, if I may so say, gregarious; is apt not only to slip from one form into another, but that any evil is apt to draw another after it. The tangled mass of sin is like one of those great fields of seaweed that you sometimes come across upon the ocean, all hanging together by a thousand slimy growths; which, if lifted from the wave at any point, drags up yards of it inextricably grown together. No man commits only one kind of transgression. All sins hunt in couples. According to the grim picture of the Old Testament, about another matter, None of them shall want his mate. The wild beasts of the desert shall meet with the wild beasts of the islands.' One sin opens the door for another, and seven other spirits worse than himself' come and make holiday in the man's heart.
Again, any evil is possible to us, seeing that all sin is but yielding to tendencies common to us all. The greatest transgressions have resulted from yielding to such tendencies. Cain killed his brother from jealousy; David besmirched his name and his reign by animal passion; Judas betrayed Christ because he was fond of money. Many a man has murdered another one simply because he had a hot temper. And you have got a temper, and you have got the love of money, and you have got animal passions, and you have got that which may stir you up into jealousy. Your neighbour's house has caught fire and been blown up. Your house, too, is built of wood, and thatched with straw, and you have as much dynamite in your cellars as he had in his. Do not be too sure that you are safe from the danger of explosion.
And, again, remember that this same wholesome self-distrust is needful for us all, because all transgression is yielding to temptations that assail all men. Here are one hundred men in a plague-stricken city; they have all got to draw their water from the same well. If five or six of them died of cholera it would be very foolish of the other ninety, five to say, There is no chance of our being touched. We all live in the same atmosphere; and the temptations that have overcome the men that have headed the count of crimes appeal to you. So the lesson is, Be not high-minded, but fear.'
And remember, still further, that the same solemn consideration is enforced upon us by the thought that men will gradually drop down to the level which, before they began the descent, seemed to be impossible to them. Is thy servant a dog that he should do this thing?' said Hazael when the crime of murdering his master first floated before him. Yes, but he did it. By degrees he came down to the level to which he thought that he would never sink. First the imagination is inflamed, then the wish begins to draw the soul to the sin, then conscience pulls it back, then the fatal decision is made, and the deed is done. Sometimes all the stages are hurried quickly through, and a man spins downhill as cheerily and fast as a diligence down the Alps. Sometimes, as the coast of a country may sink an inch in a century until long miles of the flat seabeach are under water, and towers and cities are buried beneath the barrenwaves, so our lives may be gradually lowered, with a motion imperceptible but most real, bringing us down within high-water mark, and at last the tide may wash over what was solid land.
So, dear friends, there is nothing more foolish than for any man to stand, self-confident that any form of evil that has conquered his brother has no temptation for him. It may not have for you, under present circumstances; it may not have for you to-day; but, oh! we have all of us one human heart, and he that trusteth in his own heart is a fool.' Blessed is the man that feareth always.' Humble self-distrust, consciousness of sleeping sin in my heart that may very quickly be stirred into stinging and striking; rigid self-control over all these possibilities of evil, are duties dictated by the plainest common-sense.
Do not say, I know when to stop.' Do not say, I can go so far; it will not do me any harm.' Many a man has said that, and many a man has been ruined by it. Do not say, It is natural to me to have these inclinations and tastes, and there can be no harm in yielding to them.' It is perfectly natural for a man to stoop down over the edge of a precipice to gather the flowers that are growing in some cranny in the cliff; and it is as natural for him to topple over, and be smashed to a mummy at the bottom. God gave you your dispositions and your whole nature under lock and key,'--keep them so. And when you hear of, or see, great criminals and great crimes, say to yourself, as the good old Puritan divine said, looking at a man going to the scaffold, But for the grace of God there go I!' And in the contemplation of sins and apostasies, let us each look humbly at our own weakness, and pray Him to keep us from our brother's evils which may easily become ours.