Enemy love. This is a controversial and unique feature of Christianity that is often misunderstood. Recently I came across a quote from Augustine that explains why Christians love their enemies. May we read and meditate on his words, allowing the Lord to teach us his will and ways.
"Now...what does it become us to do who live in the fellowship of the love of God, the enjoyment of whom is true happiness of life, to whom all who love Him owe both their own existence and the love they beat Him, concerning whom we have no fear that any one who comes to know Him will be disappointed in Him, and who desires our love, not for any gain to Himself, but that those who love Him may obtain an eternal reward, even Himself whom they love? And hence it is that we love even our enemies. For we do not fear them, seeing they cannot take away from us what we love; but we pity them rather, because the more they hate us the more are they separated from Him whom we love. For if they would turn to Him, they must of necessity love Him as the supreme good, and love us too as partakers with them in so great a blessing" (On Christian Doctrine, Book 1, Chapter 29).