"You have heard the saying, 'You shall love your neighbor and hate your enemy.' But I say to you, love your enemies, bless those who curse you, do good to those who hate you, and pray for those who persecute you, that you may become sons of your Father in heaven; for he makes his sun to rise on the wicked and the good alike, and sends rain on both those who do right and those who do wrong. For if you love only those who love you, what reward have you earned? Do not even the tax-gatherers as much? And if you show courtesy only to your friends, what more are you doing than others? Do not even the heathen do as much? You must therefore become perfect, even as your heavenly Father is perfect.
 
"Therefore, whatever you wish that men should do to you, do even so to them."