III. Think of the power that will fit us for all crises.
With the power of Jesus in our spirits we shall never have to attempt a duty for which we are not strengthened, nor to front a danger from and in which He will not defend us. With His life in us we shall be ready for the long hours of uneventful, unexciting duties, and for the short spurts that make exacting calls on us. We 'shall run and not be weary; we shall walk and not faint.' If we live in Jesus we shall always be in 'a land of peace,' and no 'plague shall come nigh our dwelling.' Even when the soles of our feet rest in the waters of Jordan, the waters of Jordan shall be cut off, and we shall pass over on dry ground into the land of peace, where they that would swallow us up shall be far away for ever.
'Can the Ethiopian change his skin?'--JER. xiii. 23. 'If any man be in Christ, he is a new creature.'--2 COR. v. 17. 'Behold, I make all things new.'--REV. xxi. 5.
Put these three texts together. The first is a despairing question to which experience gives only too sad and decisive a negative answer. It is the answer of many people who tell us that character must be eternal, and of many a baffled man who says, 'It is of no use--I have tried and can do nothing.' The second text is the grand Christian answer, full of confidence. It was spoken by one who had no superficial estimate of the evil, but who had known in himself the power of Christ to revolutionise a life, and make a man love all he had hated, and hate all he had loved, and fling away all he had treasured. The last text predicts the completion of the renovating process lying far ahead, but as certain as sunrise.
I. The unchangeableness of character, especially of faults.
We note the picturesque rhetorical question here. They were occasionally accustomed to see the dark-skinned, Ethiopian, whether we suppose that these were true negroes from Southern Egypt or dark Arabs, and now and then leopards came up from the thickets on the Jordan, or from the hills of the southern wilderness about the Dead Sea. The black hue of the man, the dark spots that starred the skin of the fierce beast, are fitting emblems of the evil that dyes and speckles the soul. Whether it wraps the whole character in black, or whether it only spots it here and there with tawny yellow, it is ineradicable; and a man can no more change his character once formed than a negro can cast his skin, or a leopard whiten out the spots on his hide.
Now we do not need to assert that a man has no power of self-improvement or reformation. The exhortations of the prophet to repentance and to cleansing imply that he has. If he has not, then it is no blame to him that he does not mend. Experience shows that we have a very considerable power of such a kind. It is a pity that some Christian teachers speak in exaggerated terms about the impossibility of such self-improvement.
But it is very difficult.
Note the great antagonist as set forth here--Habit, that solemn and mystical power. We do not know all the ways in which it operates, but one chief way is through physical cravings set up. It is strange how much easier a second time is than a first, especially in regard to evil acts. The hedge once broken down, it is very easy to get through it again. If one drop of water has percolated through the dyke, there will be a roaring torrent soon. There is all the difference between once and never; there is small difference between once and twice. By habit we come to do things mechanically and without effort, and we all like that. One solitary footfall across the snow soon becomes a beaten way. As in the banyan-tree, each branch becomes a root. All life is held together by cords of custom which enable us to reserve conscious effort and intelligence for greater moments. Habit tends to weigh upon us with a pressure 'heavy as frost, and deep almost as life.' But also it is the ally of good.