The title of Satan was around long before Christianity was a thing.
Done it already and the title of Satan existed long before Christianity was a thing. If you don't know about the Synagogue of Satan then you risk supporting those who are owe allegiance to it.
Psalm 82:1 doesn't specifically identify angels. This verse is more descriptive of a divine council than of messengers.
John 10:35 is talking about prophets, not humans. The prophets didn't suffer from the human condition.
You were sold a lie. The word holy is a translation of the Hebrew word qodesh, which means set-apart.
He's not deluded. The idea that satan and devil are one and the same is pure vanity.
>>225764
The law of first mention is really only a heuristic, i.e. an adversary is a role, it doesn't describe the nature of the being that plays that role. In the book of Job, Satan had a reason to act.