Justin Martyr (100-165)
“We who formerly used to murder one another do not only now refrain from making war upon our enemies, but also, that we may not lie nor deceive our examiners, willingly die confessing Christ. We who were filled with war, and mutual slaughter, and every wickedness, have each through the whole earth changed our warlike weapons,— our swords into plowshares, and our spears into implements of tillage, — and we cultivate piety, righteousness, philanthropy, faith, and hope, which we have from the Father Himself through Him who was crucified.”
"We do not wage war against our enemies."
"We will not ask you to punish our oppressors. Their present wickedness is sufficient punishment."
Source: Mean Altar Offerings