43 "You're familiar with the old written law, 'Love your friend,' and its unwritten companion, 'Hate your enemy.' 44 I'm challenging that. I'm telling you to love your enemies. Let them bring out the best in you, not the worst. When someone gives you a hard time, respond with the energies of prayer, 45 for then you are working out of your true selves, your God-created selves. This is what God does. He gives his best - the sun to warm and the rain to nourish - to everyone, regardless: the good and bad, the nice and nasty.
Matthew Henry's Commentary on Matthew 5:43-45
Commentary on Matthew 5:43-48
(Read Matthew 5:43-48)
The Jewish teachers by "neighbour" understood only those who were of their own country, nation, and religion, whom they were pleased to look upon as their friends. The Lord Jesus teaches that we must do all the real kindness we can to all, especially to their souls. We must pray for them. While many will render good for good, we must render good for evil; and this will speak a nobler principle than most men act by. Others salute their brethren, and embrace those of their own party, and way, and opinion, but we must not so confine our respect. It is the duty of Christians to desire, and aim at, and press towards perfection in grace and holiness. And therein we must study to conform ourselves to the example of our heavenly Father, 1 Peter 1:15,16. Surely more is to be expected from the followers of Christ than from others; surely more will be found in them than in others. Let us beg of God to enable us to prove ourselves his children.