The Homilies of St. John Chrysostom on the Epistle of St. Paul to the Colossians
"And above all these things put on love, which is the bond of perfectness." (Colossians 3:14)
Dost thou see that he saith this? For since it is possible for one who forgives, not to love; yea, he saith, thou must love him too, and he points out a way whereby it becomes possible to forgive. For it is possible for one to be kind, and meek, and humble-minded, and longsuffering, and yet not affectionate. And therefore, he said at the first, "A heart of compassion," both love and pity. "And above all these things, love, which is the bond of perfectness."
Now what he wishes to say is this; that there is no profit in those things, for all those things fall asunder, except they be done with love; this it is which clenches them all together; whatsoever good thing it be thou mentionest, if love be away, it is nothing, it melts away. And it is as in a ship, even though her rigging be large, yet if there be no girding ropes, it is of no service; and in a house, if there be no tie beams, it is the same; and in a body, though the bones be large, if there be no ligaments, they are of no service.
For whatsoever good deeds any may have, all do vanish away, if love be not there. He said not that it is the summit, but what is greater, "the bond"; this is more necessary than the other. For "summit" indeed is an intensity of perfectness, but "bond" is the holding fast together of those things which produce the perfectness; it is, as it were, the root.