The great preacher John Chrysostom was asks what is it that destroys the bond of peace, the unity of the Spirit, the expression of Christ’s love within the church? It is love which destroys love: When love becomes twisted and seeks that which destroys, there can be nothing but sinful conflict:
Now then, what impairs this bond? Love of money, passion for power, for glory, and the like, loosens them, and severs them asunder. How then are we to see that they be not cut asunder. By seeing that these tempers be got rid of, and that none of those things which destroy charity come in by the way to trouble us. For hear what Christ saith, When iniquity shall abound, the love of the many shall wax cold. Nothing is so opposed to love as sin, and I mean not to love towards God, but to that towards our neighbour also.
But how then, it may be said, are even robbers at peace? When are they, tell me? Doubtless then when they are acting in a spirit which is not that of robbers; for if they fail to observe the rules of justice amongst those with whom they divide the spoil, and to render to every one his right, you will find them too in wars and broils. So that neither amongst the wicked is it possible to find peace: and where men are living in righteousness and virtue, you may find it every where. But again, are rivals ever at peace? Never. And whom then would ye have me mention? The covetous man can never possibly be at peace with the covetous. So that were there not just and good persons to be wronged and to stand between them, the whole race would be torn to pieces. When two wild beasts are famished, if there be not something put between them to consume, they will devour one another. The same would be the case with the covetous and the vicious. So that it is not in nature that there should be peace where virtue is not strictly practised first. Let us form, if you please, a city entirely of covetous men, give them equal privileges, and let no one give his assent to be wronged, but let all wrong one another. Can that city possibly hold together? It is impossible. Again, is there peace amongst adulterers? No, not any two will you find of the same mind.
John Chrysostom, Commentary on the Epistle to the Galatians, and Homilies on the Epistle to the Ephesians, vol. VI, A Library of Fathers of the Holy Catholic Church (Oxford; London: John Henry Parker; J. G. F. and J. Rivington, 1840), 208–209.