18 Do not tell me, “I have besought him many times, I have intreated, I have supplicated, but I have not effected a reconciliation.” Never desist till you have reconciled him. For He said not, “Leave your gift, and go your way.” Entreat your brother. But, “Go your way. Be reconciled.” So that, although you may have made many entreaties, yet you must not desist until you have persuaded. God entreats us every day, and we do not hear; and yet He does not cease entreating.
And do you then disdain to entreat your fellow-servant. How is it then possible for you ever to be saved? Suppose that you have often pleaded and been repulsed; for this, however, you will obtain a larger reward. For in proportion as he is contentious, and you persevere in entreating, so much the more is your recompense increased. In proportion as the good work is accomplished with greater difficulty, and the reconciliation is one of much labour, so much the greater will be the judgment on him, and so much the brighter will be the crowns of victory for your forbearance.
Let us not merely applaud all this, but exemplify it too in our deeds; and never recede from the work, until we are restored to our former state of friendship. For it is not enough merely to avoid grieving an enemy, or doing him an injury, or being in our minds unkindly disposed towards him; but it is necessary that we should prepare him to be kindly affected towards ourselves. For I hear many saying, “I have no hostility; I am not annoyed; neither have I any thing to do with him.” But this is not what God commands, that you should have nothing to do with him; but that you should have much to do with him.
For this reason he is your “brother.” For this reason He said not, Forgive your brother what you have against him. But what then? “Go your way. First be reconciled to him;” and should he have “any thing against you,” yet desist not, before you have reunited the member in friendly concord. But you, who in order that you may obtain a useful servant, tellest out the gold, and discoursest with many merchants, and often undertakest long journeys, tell me, are you not up and doing to the utmost, in order that you may convert an enemy into a friend?
And how then will you be able to call upon God, while you are thus neglecting His laws? Assuredly, the possession of a servant will be of no great profit to us; but the making an enemy a friend, will render God propitious and favourable toward us; and will easily set us free from our sins; and gain us praise with men, as well as great security in our life; for nothing can be more unsafe than he who has even only a single enemy. For our earthly reputation is injured, while such a man is saying a thousand evil things of us to every body. Our minds are also in a state of fermentation, and our conscience disturbed; and we are exposed to a continual tempest of anxious thoughts.
Source: Homilies on the Statues (New Advent)