How is this possible?

A man sits on the steps of a courthouse with his face in his hands. A stranger approaches and engages him in conversation.
Stranger – Are you here to see the judge?
Man – (glumly) I’ve just seen him.
Stranger – How did it go?
Man – I was found guilty of burglary
Stranger – Have you been sentenced?
Man – (nodding) The judge said I have to pay restitution and a fine. I don’t have any money. I can’t pay it.
Stranger – What happens if you don’t pay?
Man – (sighs resigned) I will go to jail. (looks closely at the stranger) Say, you look familiar, do I know you?
Stranger – No, we’ve never met.
Man – (insisting) I’ve seen your face before.
Stranger – Well, you probably saw my picture.
Man – Where? Are you famous?
Stranger – No, I’m not famous but there are several pictures of me in my dad’s house, (emphasizing) my house.
The man is silent, stunned, the stranger continues.
Stranger – But you know, you have met my dad. He’s the judge.
The man jumps up.
Man – (startled, blustering) What do want? I told you I don’t have any money!
Stranger – Will you stop robbing people?
Man – What?
Stranger – Will you stop robbing people?
Man – Well, there’s no one to rob in jail.
Stranger – You don’t have to go to jail.
Man – I can’t pay the fine, the judge said I would go to jail.
Stranger – I already paid the fine.
Man – (Taken aback) Wait, what? But it was your house I broke into!
Stranger – I know.
Man – What do you want?
Stranger – I want to turn your life around.
Man – Why did you pay my fine?
Stranger – I want to turn your life around.
Man – I don’t know how to. I don’t have anywhere to go or any money. I’ll just wind up stealing again and I’ll wind up in jail sooner or later.
Stranger – Is that what you want?
Man – No, of course not but…
Stranger – Will you accept my help?
Man – Why would you help me?
Stranger – That’s just the way we are.
Man – Huh? We?
Stranger – My father and I
Man – Your father? But he’s the judge! He sentenced me to pay or go to jail but…but you…
Stranger – Paid your fine.
Man – I don’t understand.
Stranger – My father is perfectly just so he had to find you guilty and sentence you.
Man – But you paid my fine, (pause) how come your so nice when your dad’s so mean?
Stranger – (laughing) He’s the one who sent me to pay the fine.
Man – Now I’m really confused.
Stranger – No, now you are starting to get unconfused.
Man – What?
Stranger – Come to my house, dad wants to meet you.
Man – But I…
Stranger – The fine is paid, we forgive you, come on.
Takes the man by the arm
Man – How is this possible?
Both exit.