9 Still, if it seem well, let me glance at the rest. Afterwards there broke out a dreadful plague, and excessive destruction of a hateful disease invaded every house in succession of the trembling populace, carrying off day by day with abrupt attack numberless people, every one from his own house. All were shuddering, fleeing, shunning the contagion, impiously exposing their own friends, as if with the exclusion of the person who was sure to die of the plague, one could exclude death itself also.
There lay about the meanwhile, over the whole city, no longer bodies, but the carcasses of many, and, by the contemplation of a lot which in their turn would be theirs, demanded the pity of the passers-by for themselves. No one regarded anything besides his cruel gains. No one trembled at the remembrance of a similar event. No one did to another what he himself wished to experience. In these circumstances, it would be a wrong to pass over what the pontiff of Christ did, who excelled the pontiffs of the world as much in kindly affection as he did in truth of religion.
On the people assembled together in one place he first of all urged the benefits of mercy, teaching by examples from divine lessons, how greatly the duties of benevolence avail to deserve well of God. Then afterwards he subjoined, that there was nothing wonderful in our cherishing our own people only with the needed attentions of love, but that he might become perfect who would do something more than the publican or the heathen, who, overcoming evil with good, and practising a clemency which was like the divine clemency, loved even his enemies, who would pray for the salvation of those that persecute him, as the Lord admonishes and exhorts.
God continually makes His sun to rise, and from time to time gives showers to nourish the seed, exhibiting all these kindnesses not only to His people, but to aliens also. And if a man professes to be a son of God, why does not he imitate the example of his Father? “It becomes us,” said he, “to answer to our birth; and it is not fitting that those who are evidently born of God should be degenerate, but rather that the propagation of a good Father should be proved in His offspring by the emulation of His goodness.”
Source: The Life and Passion of Cyprian (New Advent)