I. First, we have this thought that only the loving heart can know Christ's love.
Now the Bible uses that word know to express two different things; one which we call mere intellectual perception; or to put it into plainer words, mere head knowledge such as a man may have about any subject of study, and the other a deep and living experience which is possession before it is knowledge, and knowledge because it is possession.
Now the former of these two, the knowledge which is merely the work of the understanding, is, of course, independent of love. A man may know all about Christ and His love without one spark of love in his heart. And there are thousands of people who, as far as the mere intellectual understanding is concerned, know as much about Jesus Christ and His love as the saint who is closest to the Throne, and yet have not one trace of love to Christ in them. That is the kind of people that a widely diffused Christianity and a habit of hearing sermons produce. There are plenty of them, and some of us among them, who, as far as their heads are concerned, know quite as much of Jesus Christ and His love as any of us do, and could talk about it and argue about it, and draw inferences from it, and have the whole system of evangelical Christianity at their fingers' ends. Ay! It is at their fingers' ends, it never gets any nearer them than that.
There is a knowledge with which love has nothing to do, and it is a knowledge that for many people is quite sufficient. 'Knowledge puffeth up,' says the Apostle; into an unwholesome bubble of self-complacency that will one day be pricked and disappear, but 'love buildeth up'—a steadfast, slowly-rising, solid fabric. There be two kinds of knowledge: the mere rattle of notions in a man's brain, like the seeds of a withered poppy-head; very many, very dry, very hard; that will make a noise when you shake them. And there is another kind of knowledge which goes deep down into the heart, and is the only knowledge worth calling by the name; and that knowledge is the child, as my text has it, of love.
Now let us think about that for a moment. Love, says Paul, is the parent of all knowledge. Well, now, can we find any illustrations from similar facts in other regions? Yes! I think so. How do we know, really know, any emotions of any sort whatever? Only by experience. You may talk for ever about feelings, and you teach nothing about them to those who have not experienced them. The poets of the world have been singing about love ever since the world began. But no heart has learned what love is from even the sweetest and deepest songs. Who that is not a father can be taught paternal love by words, or can come to a perception of it by an effort of mind? And so with all other emotions. Only the lips that have drunk the cup of sweetness or of bitterness can tell how sweet or how bitter it is, and even when they, made wise by experience, speak out their deepest hearts, the listeners are but little the wiser, unless they too have been scholars in the same school. Experience is our only teacher in matters of feeling and emotion, as in the lower regions of taste and appetite. A man must be hungry to know what hunger is; he must taste honey or wormwood in order to know the taste of honey or wormwood, and in like manner he cannot know sorrow but by feeling its ache, and must love if he would know love. Experience is our only teacher, and her school-fees are heavy.
Just as a blind man can never be made to understand the glories of sunrise, or the light upon the far-off mountains; just as a deaf man may read books about acoustics, but they will not give him a notion of what it is to hear Beethoven, so we must have love to Christ before we know what love to Christ is, and we must consciously experience the love of Christ ere we know what the love of Christ is. We must have love to Christ in order to have a deep and living possession of love of Christ, though reciprocally it is also true that we must have the love of Christ known and felt by our answering hearts, if we are ever to love Him back again.
So in all the play and counterplay of love between Christ and us, and in all the reaction of knowledge and love this remains true, that we must be rooted and grounded in love ere we can know love, and must have Christ dwelling in our hearts, in order to that deep and living possession which, when it is conscious of itself, is knowledge, and is for ever alien to the loveless heart.
'He must be loved, ere that to you
He will seem worthy of your love.'
If you want to know the blessedness of the love of Christ, love Him, and open your hearts for the entrance of His love to you. Love is the parent of deep, true knowledge.
Of course, before we can love an unseen person and believe in his love, we must know about him by the ordinary means by which we learn about all persons outside the circle of our sight. So before the love which is thus the parent of deep, true knowledge, there must be the knowledge by study and credence of the record concerning Christ, which supplies the facts on which alone love can be nourished. The understanding has its part to play in leading the heart to love, and then the heart becomes the true teacher. He that loveth, knoweth God, for God is love. He that is rooted and grounded in love because Christ dwells in his heart, will be strengthened to know the love in which he is rooted. The Christ within us will know the love of Christ. We must first 'taste,' and then we shall 'see' that the Lord is good, as the Psalmist puts it with deep truth. First, the appropriation and feeding upon God, then the clear perception by the mind of the sweetness in the taste. First the enjoyment; then the reflection on the enjoyment. First the love; and then the consciousness of the love of Christ possessed and the love to Christ experienced. The heart must be grounded in love that the man may know the love which passeth knowledge.