PSYCHOANALYSIS OF THE ISRAEL-PALESTINIAN CONFLICT
Sam Vaknin
What in the meaning of the paradoxical prescription of Jesus of Nazareth who said “love thine enemies”? What is the reference to this in the Bible, New Testament?
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The meaning of the paradoxical prescription of Jesus of Nazareth who said “love thine enemies” is that He taught His followers to show love and kindness to those who oppose, mistreat, or harm them.
He challenged them to go beyond the natural human tendency to retaliate or seek revenge, and to instead respond with compassion, forgiveness, and empathy. He also encouraged them to pray for their enemies and seek their well-being. He said that by doing this, they would reflect the character of God, who loves everyone, even the ungrateful and the evil. He also said that loving one's enemies would be a powerful way to overcome evil with good, and to promote peace and reconciliation
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The reference to this teaching in the Bible, New Testament, is found in Matthew 5:43-48 and Luke 6:27-36. These are part of the Sermon on the Mount and the Sermon on the Plain, respectively, where Jesus taught His disciples and the crowds about various topics related to the kingdom of God.
In both passages, Jesus contrasted His teaching with the conventional wisdom of His time, which said “love your neighbor and hate your enemy”
Jesus said that this was not enough, and that His followers should love even those who hate them. He also gave some practical examples of how to love one's enemies, such as blessing those who curse you, doing good to those who hate you, turning the other cheek, giving to those who ask, and lending without expecting anything in return

What Did Jesus Mean by “Love Your Enemies” in the Bible?
Loving our enemies is a foreign concept. Love and enemies are words that seem mutually exclusive. Putting the two together raises questions. When the Bible tells us to love our enemies what does that mean? Why was this so important to Jesus?
Christianity.com