7 What is the need then of sustaining such a siege, such torment and such punishment? For if hell did not threaten the resentful; yet for the very torment resulting from the thing itself we ought to forgive the offenses of those who have aggrieved us. But when deathless punishments remain behind, what can be more senseless than the man, who both here and there brings punishment upon himself, while he thinks to be revenged upon his enemy! For suppose that we see him still prosperous, then we are ready to die of chagrin; but if in an adverse condition, we are in fear, lest some propitious turn of events should take place.
But for both of these there is stored up for us an inevitable punishment. For, “Rejoice not,” he says, “when your enemy stumbles.” And tell me not of the greatness of the injuries received; for it is not this which makes your wrath to be retained; but this, that you are unmindful of your own offenses; that you have not before your eyes either hell or the fear of God! To convince you that this is true, I will endeavour to make it manifest from the events which have happened in this city.
For when the persons impeached of those flagrant crimes were dragged to the tribunal of justice—when the fire was kindled within, and the executioners stood around, and were lacerating their ribs, if any one standing beside them had proclaimed, “If you have any enemies, dismiss your resentment, and we shall be able to set you free from this punishment;”— would they not have kissed their very feet? And why do I say their feet? If one had bidden them take them for their masters, they would not then have refused.
But if punishment that is human, and has its bounds, would have triumphed over all anger, much more would the punishment to come, if it had continual possession of our thoughts, expel from the soul not only resentment, but every evil imagination? For what is easier, I ask, than to get rid of resentment against the injurer? Is there any long journey to be undertaken? Is there any expenditure of money? Is the aid of others to be invoked? It suffices only to resolve, and the good deed at once reaches the goal.
What punishment, then, must we not deserve, if on account of worldly affairs we stoop to slavish occupations; and show a servility unworthy of ourselves; and expend money; and enter into conversation with porters, that we may flatter impious men; and do and say all manner of things, so that we may perfectly attain the end we have in view; and yet cannot endure, for the sake of God's laws, to entreat a brother who has injured us, but consider it a disgrace to be the first to make advances.
Are you ashamed, tell me, when you are going to be the first to make gain? Rather, on the contrary, you ought to be ashamed of persisting in this passion; and waiting until the person who has committed the injury comes to you to be reconciled; for this is a disgrace, and a reproach, and the greatest loss.
Source: Homilies on the Statues (New Advent)