The morsel dipped in the dish and passed by the host's hand to a guest, was a token of favour, of unity and confidence. It was one more attempt to save Judas, one more token of all-forgiving patience. No wonder that that last sign of friendship embittered his hatred and sharpened his purpose to an unalterable decision, or, as John says: 'After the sop, Satan entered into him.' For then, as ever, the heart which is not melted by Christ's offered love is hardened by it.
Now, if we take these three stages of this conversation we may learn some valuable lessons from them. I take the first form of the question as an example of that wholesome self-distrust which a glimpse into the slumbering possibilities of evil in our hearts ought to give us all. I take the second on the lips of Judas, as an example of the very opposite of that self-distrust, the fixed determination to do a wrong thing, however clearly we know it to be wrong. And I take the last form of the question, as asked by John, as an illustration of the peaceful confidence which comes from the consciousness of Christ's love, and of communion with Him. Now a word or two about each of these.
I. 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 some times 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.