Then, still further, in this fellowship one with another, John presupposes the fellowship with God for each, which makes the possibility and the certainty of all being drawn into one family. He does not think it necessary to state, what is so plain and obvious, viz., that unless we are in sympathy with God, in our aspiration and effort after the light which is His home and ours, we have no real communion with Him. I said that sin separated man from man, and disrupted all the sweet bonds of amity, so that if men come into contact, being themselves in the darkness, they come into collision rather than into communion. A company of travellers in the night are isolated individuals. When the sun rises on their paths they are a company again. And in like manner, sin separates us from God, and if our hearts are turned towards, and denizens of, the darkness of impurity, then we have no communion with Him. He cannot come to us if we love the darkness. He
'Can but listen at the gate, And hear the household jar within.'
The tide of the Atlantic feels along the base of iron-bound cliffs on our western shores, and there is not a crevice into which it can come. So God moves about us, but is without us, so long as we walk in darkness. So let us remember that no union with Him is possible, except there be this common dwelling in the light. Two grains of quicksilver laid upon a polished surface will never unite if their surfaces be dusted over with minute impurities, or if the surface of one of them be. Clean away the motes, and they will coalesce and be one. A film of sin separates men from God. And if the film be removed the man dwells in God, and God in him.
III. That brings me to my last point: The progressive cleansing of those who dwell in the light.
'The blood of Jesus Christ cleanseth from all sin.' Now if you will notice the whole context, and eminently the words a couple of verses after my text, you will see that the cleansing here meant is not the cleansing of forgiveness, but the cleansing of purifying. For the two things are articulately distinguished in the ninth verse: 'He is faithful and just to forgive us our sins, and to cleanse us from all unrighteousness.' So, to use theological terms, it is not justification, but sanctification that is meant here.
Then there is another thing to be noticed, and that is that when the Apostle speaks here about the blood of Christ, he is not thinking of that blood as shed on the Cross, the atoning sacrifice, but of that blood as transfused into the veins, the source there of our new life. The Old Testament says that 'the blood is the life.' Never mind about the statement being scientifically correct; it conveys the idea of the time, which underlies a great deal of Old and New Testament teaching. And when John says the blood of Jesus cleanses from 'all sin,' he says just the same thing as his brother Paul said, 'the law of the spirit of life in Jesus Christ makes me free from the law of sin and death.' That is to say, a growing cleansing from the dominion and the power of sin is granted to us, if we have the life of Jesus Christ breathed into our lives. The metaphor is a very strong one. They tell us--I know nothing about the truth of it--that sometimes it has been possible to revive a moribund man by transfusing into his veins blood from another. That is a picture of the only way by which you and I can become free from the tyranny that dominates us. We must have the life of Christ as the animating principle of our lives, the spirit of Jesus emancipating us from the power of sin and death.