But although this comparison of society to the body is not new, it is now being more seriously and scientifically examined and pushed to its legitimate conclusions and applications. The "real meaning of the doctrine that society is an organism is that an individual has no life except that which is social, and that he cannot realize his own purposes except in realizing the larger purposes of society." All the organs of the body by which we do our work in the world and earn our bread are themselves maintained in life and fulfil the end of their own existence by working for and maintaining the whole body; and except in the common life of the body they cannot be maintained at all. It is the same with the other organs of the body. The heart, the lungs, the digestive organs, have hard and constant work to do; but only by doing it can they fulfil the very purpose of their existence and maintain themselves in life by contributing to the life of the body in which alone they can live at all. The same principle holds good in society. It is obvious in trade and commerce; a man can only maintain himself in life by helping to maintain other people. And the ideal society is one in which each man should not only yield reluctantly to the compulsion of this natural law, but should clearly see the great ends for which mankind exists and labour zealously to promote these ends, should as eagerly seek what contributes to the good of the whole as the hand is stretched out for food or as the palate relishes what stays the appetite and nourishes the whole body.
Illustrating the relation of Christians to one another by the figure of the members of a body, Paul suggests several ideas.
1. The unity of Christians is a vital unity. The members of the body of Christ form one whole because they partake of one common life. "By one Spirit are we all baptized into one body, whether we be Jews or Gentiles, whether we be bond or free; and have been all made to drink into one Spirit." The unity of those who together form the body of Christ is not a mechanical unity, as of a pound of shot in a bag; nor is it a unity imposed by external force, as of caged wild beasts in a menagerie; nor is it a unity of mere accidental juxtaposition, as of passengers in a train or of the inhabitants of a town. But as the life of the human body maintains all the various members and nourishes them to a well-proportioned and harmonious growth, so is it in the body of Christ. Remove from the human body the life that supports it, and all the members fall away from connection with one another; but so long as the life is retained it assimilates in the most surprising way all nutriment to its own precise type and form. The lion and the tiger may eat precisely the same food, but that food nourishes in each a different form. The life that animates the human body assimilates nutriment to its own uses, imparting to each member its due proportion and maintaining all the members in their relation to one another.
The unity of Christians is a unity of this kind, a vital unity. The same spiritual life exists in all Christians, derived from the same source, supplying them with similar energy, and prompting them to the same habits and aims. They accept the Spirit of Christ, and so are formed into one body, being no more isolated, self-seeking, and each man fighting for his own hand, but banded together for the promotion of one common cause. There is no clashing between the interests of the individual and the interests of the society or kingdom to which he belongs. The member finds its only life and function in the body. It is by the freest and most deliberate exercise of his reason and his will that a man attaches himself to Christ, seeing that by so doing he enters the only path to real happiness and attainment. The individual can only utter and fulfil his best self by doing his possible for society. His devotement to public interests is no self-destroying generosity, but the dictate of duty and of reason. To quote a writer who deals with this matter from the philosophical point of view, "he who has made the welfare of the race his aim has done so, not from a generous choice, but because he regards the pursuit of this welfare as his imperative duty. The welfare of the race is his own ideal, what he must realize in order to be what he ought to be. The welfare of the race is his own welfare, which he must seek because he must be himself. Cromwell, Luther, Mahomet, were heroes, not because they did something over and above what they ought to have done, but because their ideal self was coextensive with the larger life of their world. 'I can no other' was the voice of each.... Their large purposes were what they owed to themselves just as much as to their world."[14]
Those who cannot philosophically reconcile the claims of society and the claims of the individual are yet enabled by their attachment to Christ and by their acceptance of His Spirit to merge self in the larger whole of Christ's body and find their truest life in seeking the good of others. It is by their acceptance of Christ's Spirit as the source and Guide of their own life that they enter into fellowship with the community of men.
2. Paul is careful to show that the very efficiency of the body depends upon the multiplicity and variety of the members of which it is composed: "If they were all one member, where were the body?" "If the whole body were an eye, where were the hearing? If the whole were hearing, where were the smelling?" The lowest forms of life have either no distinct organs or very few; but the higher we ascend in the scale of life the more numerous and more distinctly differentiated are the organs. In the lower forms one member discharges several functions, and the animal uses the same organ for locomotion as it uses for eating and digesting; in the higher forms each department of life and activity is presided over by its own sense or organ. The same law holds good of society. Among tribes low down in the scale of civilisation each man is his own farmer, or shepherd, or huntsman, and his own priest, and butcher, and cook, and clothier. Each man does everything for himself. But as men become civilised the various wants of society are supplied by different individuals, and every function is specialized. The same law necessarily holds true of the body of Christ. It is highly organized, and no one organ can do the whole work of the body. Therefore one has this gift, another that. And the more nearly this body approaches perfection, the more various and distinct will these gifts be.
One important function of the Church therefore is to elicit and utilize every faculty for good which its members possess. In a society in which Christianity is but beginning to take root, it may fall to one man to do the work of the whole Christian body—to be eye, tongue, foot, hand, and heart. He must evangelise, he must teach, he must legislate, he must enforce law; he must preach, he must pray, he must lead the singing; he must plan the church and help to build it; translate the Scriptures and help to print them; teach the savages to wear a little clothing and help to make it; dissuade them from war and instruct them in the arts of peace, instilling a taste for agriculture and commerce. But when the Christian society has left this rudimentary stage behind, those various functions are discharged by different individuals; and as it advances towards a perfect condition its functions and organs become as multifarious and as distinctly differentiated as the organs of the human body. Every member of the Church is different from every other, and has a gift of his own. Some are fitted to nourish the Church herself and maintain the body of Christ in health and efficiency; some are fitted to act on the world outside: they are eyes to perceive, feet to pursue, hands to lay hold of those who are straying from the light.
Every one therefore who is drawn into the fellowship of the body of Christ has something to contribute to its good and to the work it does. He is in connection with that body because the Spirit of Christ has possessed and assimilated him to it; and that Spirit energizes in him. He may not see that anything the Church is presently engaged in is work he can undertake. He may feel out of place and awkward when he attempts to do what others are doing. He feels himself like a greyhound, compelled to run by scent and not by sight, and expected to do the work of a pointer, and not seize his quarry, or as if set to do the work of an eye with the hand. He can do it only in a groping, fumbling, imperfect manner. But this is only a hint that he is meant for other work, not for none. And it is for him to discover what his Christian instincts lead him to. The eye does not need to be told it is for seeing, or the hand that it is for grasping. The eye and the hand of the child instinctively do their office. And where there is true Christian life, it matters not what the member of Christ's body be, it will find its function, even though that function is new in the Church's experience.
The fact then that you are very different from the ordinary members of the Church is no reason for supposing you do not belong to Christ's body. The ear is very different from the eye; it can detect neither form nor colour; it cannot enjoy a landscape or welcome a friend: but "if the ear shall say, Because I am not the eye, I am not of the body; is it therefore not of the body?" Is it not, on the contrary, its very diversity from the eye that makes it a welcome addition to the body, enriching its capabilities and enlarging its usefulness? It is not by comparison with other people that we can tell whether we belong to the body of Christ, nor is our function in that body determined by anything which some other member is doing. The very difficulty we find in adjusting ourselves to others and in finding any already existing Christian work to which we can give ourselves is a hint that we have the opportunity of adding to the Church's efficiency. The Church can claim to be perfect only when she embraces the most diversely gifted individuals and allows the tastes, instincts, and aptitudes of all to be used in her work.
3. As there is to be no slothful self-disparagement in the body of Christ, so must there be no depreciation of other people. "The eye cannot say unto the hand, I have no need of thee: nor again the head to the feet, I have no need of you." When zealous people discover new methods, they forthwith despise the normal ecclesiastical system that has stood the test and is stamped with the approval of centuries. One method cannot regenerate and Christianize the world, any more than one member can do the whole work of the body. Paul goes even further, and reminds us that the "feeble" parts of the body are "the more necessary;" the heart, the brain, the lungs, and all those delicate members of the body that do its essential work entirely hidden from view are more necessary than the hand or the foot, the loss of which no doubt cripples, but does not kill. So in the Church of Christ it is the hidden souls who by their prayers and domestic godliness maintain the whole body in health and enable more conspicuously gifted members to do their part. Contempt for any member of the body of Christ is most unseemly and sinful. Yet men seem unable ever to learn how many members, and how various, it takes to complete a body, and how needful are those functions they themselves are wholly unable to discharge.