Jesus said, “You have heard that it was said, ‘You shall love your neighbor and hate your enemy,’ said Jesus in his famous Sermon on the Mount. “But I say to you, Love your enemies and pray for those who persecute you, so that you may be sons of your Father who is in heaven” (Matthew 5:43).

John MacArthur explains, “we are not to be enemies of those who may be enemies to us. From their perspective, we are their enemies; but from our perspective, they should be our neighbors.”
But how do we pray for enemies who want to kill us?  Check out the post at the link below: 

http://www.thegospelcoalition.org/article/3-ways-to-pray-for-our-enemies