But, whilst all this is perfectly true--and there are associations that we must not break if we are to do our work as Christian people--it is also true that it is possible, in the closest unions with men who do not share our faith, to do the same thing that they are doing, with a difference which separates us from them, even whilst we are united with them. They tell us that, however dense any material substance may seem to be, there is always a film of air between contiguous particles. And there should be a film between us and our Christless friends and companions and partners, not perceptible perhaps to a superficial observer, but most real. If we do our common work as a religious duty, and in the exercise of all our daily occupations 'set the Lord always before' us, however closely we may be associated with people who do not so live, they will know the difference; never fear! And you will know the difference, and will not be identified with them, but separate in a wholesome fashion from them. And, dear brethren, if I may go a step further, I would venture to say that it seems to me that our Christian communities want few things more in this day than the reiteration of the old saying, 'Have no fellowship with the unfruitful works of darkness, but rather reprove them.' There is so much in this time to break down the separation between him that believeth in Christ and him that doth not; narrowness has come to be thought such an enormous wickedness, and liberality is so lauded by all sorts of superficial people, that Christian men need to be summoned back to their standard. 'Being let go, they went to their own company'--there is a natural affinity which should, and will, if our faith is vital, draw us to those who, on the gravest and solemnest things, have the same thoughts, the same hopes, the same faith. I do not urge you, God knows, to be bigoted and narrow, and shut yourselves up in your faith, and leave the world to go to the devil; but I do not wish, either, that Christian people should fling themselves into the arms and nestle in the hearts of persons who do not share with them 'like precious faith.' I am sure that there are many Christian people, old and young, who are suffering in their religious life because they are neglecting this commandment of my text. 'Let him alone.' There can be no deep affection, and, most of all--if I may venture on such ground--no wedded love worth the name, where there is not unanimity in regard to the deepest matters. It does not say much for the religion of a professing Christian who finds his heart's friends and his chosen companions in people that have no sympathy with the religion which he professes. It does not say much for you if it is so with you, for the Christian, whom you like least, is nearer you in the depths of your true self than is the non-Christian whom you love most.