If God sends sinners to Hell to be punished, what incentive does the Devil have to punish them? I would think the Devil would treat sinners very well...
How do we know that Satan is the evil God, & Yaweh the good god? We only have the say so of one book. Satan has never given his side of the story. The authors of the bible may have been decieved.
What evil has Satan committed in the old testament? All we have is that Satan tested & afflicted Job, however this is at the behest of Yaweh, who gave Satan permission to do this.
On the other hand, this is what Yaweh has (apparently) done:
1. Cursed all of mankind, because Adam & Eve gained knowledge by eating from the tree that god deliberately planted in the garden, & then allowed a talking snake into the garden to decieve them. Yaweh deliberately setup his creation to fail, apparently so he would have an excuse to curse & later drown everybody.
2. Committed genocide against all mankind & all the animals of the earth by drowning everybody in a flood, because god apparently had no foresight that his creation would turn bad after he cursed all of mankind.
3. Commanded Abraham to sacrifice his first born son, then at the last minute said, haha, im only joking!
4. Deliberately hardened pharoahs heart so that he wouldnt release the israelites, even though he wanted to release the israelites, to give yaweh an excuse to send more plagues on egypt.
5. Committed genocide against all the innocent firstborn of egypt.
6. Commanded the Israelites to observe many dumb laws amongst the few good laws, including keeping slaves, allowed rape etc.
7. Ordered israelites to commit genocide against tribes already living in the 'promised land', including all the innocents, & allowed the taking of young virgin girls as slaves..
In addition Yaweh comes across as a vain, conceited, jealous & psycopathic megolamaniac. Hardly the qualities you would expect in a 'good god'.
I could go on with more, but you get the general idea. Maybe Satan is good, & Yaweh is evil. Maybe Satan fought with Yaweh, because he was sick of Yaweh's incompetence at not getting creation right, & then constantly blaming & cursing & punishing mankind. maybe Yaweh isnt even the creator, but is just claiming to be the creator.
There is no actual evidence that Yaweh is good, & Satan is evil. You would expect an evil god to say that the good god is actually the evil one.
Before anybody gets the wrong idea, I am not promoting Satan worship, because I dont think that any god should be worshipped, just because of what it says in an ancient book written by a superstitious people. I am also not saying that Satan actually IS the good god, & Yaweh the evil god, however there is no reason why it could not BE that way, if they actually existed. There is no evidence that things are as it says in the bible, & absolutely no reason that we should assume that Yaweh is the 'good' god.