If an enemy steals your jacket, don't keep your shirt from him. If someone wants something from you, give it freely. If someone borrows something from you, don't ask for it back. Treat people the same way you want them to treat you. For even sinners love those who love them back.
Sinners do the same thing.
Sinners lend money to each other so they will get the money back. So, love your enemies, do good for everyone, and lend freely, but do not expect anything in return. God will give you a great reward. And you will his children. Remember, God is kind to everyone, even those who are ungrateful and evil.