obviously you have not read the bible.
the good Samaritan is the story of a foreigner an out sider that stops to help someone that had been attacked by bandits and left at the side of the road. it is the story of some one that does something because it is the right thing to do. the story is there to tell us that sometimes people that do not share are belief system will behave and act better then those that claim to share the same belief.
the story is Jesus response when asked who is my neighbor.
I don’t know where you got the idea that it was about helping your enemies.
here is the actual parable. from king James bible the book of luke.
29 But he wanted to justify himself, so he asked Jesus, “And who is my neighbor?”
30 In reply Jesus said: “A man was going down from Jerusalem to Jericho, when he was attacked by robbers. They stripped him of his clothes, beat him and went away, leaving him half dead. 31 A priest happened to be going down the same road, and when he saw the man, he passed by on the other side. 32 So too, a Levite, when he came to the place and saw him, passed by on the other side. 33 But a Samaritan, as he traveled, came where the man was; and when he saw him, he took pity on him. 34 He went to him and bandaged his wounds, pouring on oil and wine. Then he put the man on his own donkey, brought him to an inn and took care of him. 35 The next day he took out two denarii[c] and gave them to the innkeeper. ‘Look after him,’ he said, ‘and when I return, I will reimburse you for any extra expense you may have.’
36 “Which of these three do you think was a neighbor to the man who fell into the hands of robbers