John 16:13-15
“And shall show you things to come.” Here most of all Christ shows His Dignity, for to foretell things to come is especially the property of God. Now if He also learn this from others, He will have nothing more than the Prophets, but here Christ declares a knowledge brought into exact accordance with God, that it is impossible that He should speak anything else. But the, “shall receive of Mine,” means, “shall receive, either of the grace which came into My Flesh, or of the knowledge which I also have, not as needing it, nor as learning it from another, but because it is One and the same.” “And wherefore spoke He thus, and not otherwise?” Because they understand not yet the word concerning the Spirit, wherefore He provides for one thing only, that the Spirit should be believed and received by them, and that they should not be offended. For since He had said, “One is your Teacher, even Christ”, that they might not deem that they should disobey Him in obeying the Spirit, He says, “His teaching and Mine are One; of what I should have taught, of those things shall He also speak. Do not suppose His words are other than Mine, for those words are Mine, and confirm My opinion. For One is the will of the Father, and of the Son, and of the Holy Ghost.” Thus also He wills us to be, when He says, “That they may be one, as You and I are One.”
4. There is nothing equal to unanimity and concord; for so one is manifold. If two or ten are of one mind, the one is one no longer, but each one is multiplied tenfold, and you will find the one in the ten, and the ten in the one; and if they have an enemy, he who attacks the one, as having attacked the ten, is vanquished; for he is the mark not for one, but for ten opponents. Is one in want? No, he is not in want, for he is wealthy in his greater part, that is, in the nine; and the needy part, the lesser, is concealed by the wealthy part, the greater. Each of these has twenty hands, twenty eyes, and as many feet. For he sees not with his own eyes alone, but with those of others; he walks not with his own feet alone, but with those of others; he works not with his own hands alone, but with theirs. He has ten souls, for not only does he take thought for himself, but those souls also for him. And if they be made a hundred, it will still be the same, and their power will be extended. Do you see the excess of love, how it makes the one both irresistible and manifold, how one can even be in many places, the same both in Persia and in Rome, and that what nature cannot do, love can? For one part of him will be here, and one there, or rather he will be wholly here and wholly there. If then he have a thousand or two thousand friends, consider again whither his power will extend. Do you see what an increase-giving thing is love? For the wonderful thing is this, its making one a thousand. Why then do we not acquire this power and place ourselves in safety? This is better than all power or riches, this is more than health, than light itself, it is the groundwork of good courage. How long do we set our love on one or two? Consider also the action in the contrary way. Suppose a man without a friend, a mark of the utmost folly, (for a fool will say, “I have no friend,”) what sort of life will such a one lead? For though he be infinitely rich, in plenty and luxury, possessed of ten thousand good things, yet is he desolate and bare of all. But in the case of friends not so; though they be poor men, yet are they better provided than the wealthy; and the things which a man undertakes not to say for himself, a friend will say for him, and whatever gratifications he is not able to procure for himself, he will be enabled to obtain by means of another, and much more; and it will be to us the groundwork of all enjoyment and safety, since one who is guarded by so many spearmen cannot suffer harm. For the king's body guards are not equal in their strictness to these. The one perform their watch through compulsion and fear, the others through kindness and love; and love is far mightier than fear. The king fears his own guards; the friend is more confident in them than in himself, and by reason of them fears none of those that plot against him. Let us then engage in this traffic; the poor man, that he may have consolation in his poverty; the rich, that he may possess his wealth in safety; the ruler, that he may rule with safety; the ruled, that he may have benevolent rulers. This is the source of kindness, this the groundwork of gentleness; since even among beasts, those are the most fierce and untamable which are not gregarious. For this cause we dwell in cities, and have public places, that we may converse with one another. This also Paul commanded, saying, “Not forsaking the assembling of ourselves together”; for no evil is so great as solitariness, and the state which is without compact and intercourse. “What then,” says some one, “of the solitaries, and of those who have occupied the summits of the mountains?” That neither are they without friends; they have indeed fled from the turmoil of common life, but they have many of one soul with them, and closely bound together one to another; and they have retired that they might rightly accomplish this thing. For since the rivalry of business causes many disputes, therefore, removing from among men, they cultivate love with much exactness. “But how,” says some one, “if a man be alone can he have ten thousand friends?” I, for my part, desire, if it be possible, that men should know how to dwell one with another; but for the present let the properties of friendship remain unshaken. For it is not place which makes friends. They, for instance, have many who admire them; now these would not have admired had they not loved them. Again, they pray for all the world, which is the greatest proof of friendship. For this cause we salute one another at the Mysteries, that being many we may become one; and in the case of the uninitiated, we make our prayers common, supplicating for the sick, and for the produce of the world, for land and sea. Do you see all the power of love? In the prayers, in the Mysteries, in the exhortations? This is that which causes all good things. If we hold carefully to this, we shall both rightly dispense things present, and also obtain the Kingdom; which may we all obtain through the grace and lovingkindness of our Lord Jesus Christ, by whom and with whom, to the Father and the Holy Ghost, be glory, for ever and ever. Amen.
Source: Homilies on the Gospel of John (New Advent)