These verses are perhaps the most difficult in the teachings of Jesus to interpret and apply. They teach the highest ethic this world has ever heard. The religious leaders had been teaching that the Law says to love your neighbor (which it does) and to hate your enemy (which it does not). Jesus corrects the misunderstanding and calls for total commitment from His disciples. Loving our neighbors and even our enemies according to Gods standards is impossible, except for one thing: we have Jesus living in us.
Scripture References: Matthew 5:38-48