'Love Your Enemies' in the Bible

but I say unto you, Love your enemies, bless them that curse you, do good to them that hate you, and pray for them who traduce you, and persecute you:

But as for you, who hear me, love your enemies: do good to those, who hate you: bless those, who curse you:

but as for you, love your enemies, do good, and lend without expecting any advantage from it: so shall your reward be great, in acting like the children of the most high: for he is kind to the most ungrateful wretches.