Why exactly was rebelling against God evil? I know I have seperate few of the Christian deitys then most so I apologize.
What I here you saying is that you want to talk about the nature and origin of good and the nature and orgin of evil.
Let us start the nature of Good and then go to evil.
What is Good.
The bible state that when God created the heaven and the earth it was good, good , good, very good. (gen1)
GOODSynonyms
1. pure, moral, conscientious, meritorious, worthy, exemplary, upright.
2. commendable, admirable.
5. obedient, heedful.
6. kindly, benevolent, humane, gracious, obliging.
23. full, adequate.
24. profitable, useful, serviceable, beneficial.
25. efficient, proficient, capable, able, ready, suited, suitable, dexterous, expert, adroit, apt.
46. See
property
Notice defintion 24. benefical. to be good is to have some benifit there is intresensic value.
so the world was created benifical, benifical, very benifical with inherent value.
The bible also says that god alone is good . so if god alone is good then he must be the source of everything of value and benifit.
If god is the source of everthing good and valubale then to rebel against him like satan did would be to rebel against everything good and valuable.