In "the fiery furnace," why is the babylonian king angry with shadrach, meshach, and abednego?

He is mad because they will not worship his fake idols.  So they get thrown in the furnace.  And they do not burn :)

I don't know how the writer is but the character in the story is most likely 15. I really like the poem. I think it about why she committed suicide. What events led up to that point and it seems her father was the main reason for it. 

Hope it helped.