Now let us consider another saying of Celsus, which is as follows: “The satrap of a Persian or Roman monarch, or ruler or general or governor, yea, even those who fill lower offices of trust or service in the state, would be able to do great injury to those who despised them; and will the satraps and ministers of earth and air be insulted with impunity?” Observe now how he introduces servants of the Most High— rulers, generals, governors, and those filling lower offices of trust and service— as, after the manner of men, inflicting injury upon those who insult them.
For he does not consider that a wise man would not wish to do harm to any, but would strive to the utmost of his power to change and amend them; unless, indeed, it be that those whom Celsus makes servants and rulers appointed by the Most High are behind Lycurgus, the lawgiver of the Lacedæmonians, or Zeno of Citium. For when Lycurgus had had his eye put out by a man, he got the offender into his power; but instead of taking revenge upon him, he ceased not to use all his arts of persuasion until he induced him to become a philosopher.
And Zeno, on the occasion of some one saying, “Let me perish rather than not have my revenge on you,” answered him, “But rather let me perish if I do not make a friend of you.” And I am not yet speaking of those whose characters have been formed by the teaching of Jesus, and who have heard the words, “Love your enemies, and pray for them which despitefully use you, that you may be the children of your Father which is in heaven; for He makes His sun to rise on the evil and on the good, and sends rain on the just and on the unjust.” And in the prophetical writings the righteous man says, “O Lord my God, if I have done this; if there be iniquity in my hands; if I have returned evil to those who have done evil to me, let me fall helpless under mine enemies: let my enemy persecute my soul, and take it; yea, let him tread down my life upon the earth.”
Source: Against Celsus (New Advent)