Coming from a philosophical standpoint luck doesn't exist. When you get "lucky" it isn't an outside force that is rewarding you for helping a grandma crossing the street, it is just a concept we came up with to give reason behind things that seemingly shouldn't happen.
From a spiritual/religious standpoint it is the opposite. Luck could be your god(s) rewarding you for good behavior, or just making you lucky for no reason but to have fun. People tend to believe in luck as some outside force due to religious or spiritual beliefs.
Explanation:
Hey or they
I think your question Confused me
I dont think you'd be able to answer this unless you've read the story, so posting it without the story would not benefit you - you might want to go in and add it. :)
Question #1. Macbeth says to himself "If chance will have me king, why,/ Chance may crown me, without my stir."
Question #2. Duncan is the one who is being referred to in these lines by Macbeth.