You know, I find it interesting that the Jews (who Christianity came from) don't have a concept of hell, but rather think of it as a waiting room where ALL souls are purified before rejoining God in Heaven. Matter of fact, many rabbis believe that the maximum amount of time a soul will be waiting is only about a year.
Me personally? I think that hell is a Christian concept, invented to keep the masses in line and butts in the pews. Makes it easier to fleece them for money.
Well.......sort of. It has become that in the modern age but that's not how it started. I will give you the breakdown and attempt brevity (and most assuredly fail. LOL). This is also the shorthand so it's not completely thorough.
You are correct that hell and Satan were not originally Jewish concepts. Here's the deal...when the Covenant was made, Satan and hell did not exist in Jewish thought or tradition. God was responsible for all things, good and bad. After the Covenant was made things were pretty rough for the Jews. Remember that God's part of the contract was to provide safety, security, the ability to live in harmony with and closely worship God, prosperity, etc. The Jews' part of the contract was to follow the Law. Well the Jews were not following the Law and so when things went bad they said "
well WE are not keeping up our end of the contract so God is not obligated to keep His"
But then the Jews really started to. They got their asses in gear and really started to get it right. The problem was....things didn't improve. In fact, they got worse. They got conquered by the Babylonians, later the Macedonians, Seleucid Greeks, Romans, blah, blah, blah. So this was a problem. '
Why was it that God was not fulfilling His part of the contract now that they were fulfilling theirs?' It was a big dilemma. Later Christian authors and theologians argued that He did not keep up His end because once the Covenant was broken, God never renewed it and hence the Jews lost their status as the Chosen People...of course, in favor of the Christians who had created a New Covenant through Jesus. Pretty convenient, frankly.
But we are jumping ahead.
At the time, Jews needed an explanation and their explanation was that there must be an evil force on Earth that is in direct conflict with the good force and thus God was not fulfilling His end of the deal because someone else was interfering.....and just like that....Satan was born.
It is interesting to look at the depiction of God in the Bible prior to the invention (yes I said "invention") of Satan and afterwards and it's interesting to see how Satan develops in Jewish, and later Christian, thought. God, in the earliest books of the Bible, is a hard nosed ass kicker who is wrathful and stern. But as Satan starts to enter the picture, God become far more loving and forgiving. The positive things started to get emphasized with God while the negative things, that were previously assumed to be the work of God as well, start to be attributed to Satan.
Satan as well develops. In his earliest appearance, Job, he is a meddler, a pain in the ass, and for lack of a better term a devil's advocate. He is almost like an adviser to God whose job it is to point out negative stuff. God is all happy about Job and Satan is like...'
yeah but you know....think of this. Tell you what...let's test it and fuck with this guy a bit and see if his faith holds.'. But by the time we reach the New Testament, and especially The Revelation, Satan isn't just a meddler or a manipulative pain in the ass....he has become the personification of all evil.
Now Christianity didn't get kicking until the concept of Satan was really rocking and the influence in the apocalyptic nature of the New Testament is undeniable. That's why it seems so prevalent in Christianity, and later Islam (which is based off both Judaism and Christianity), and not so much in Judaism. Hell, as a place of eternal torment, was a concept that simply never evolved in Jewish thought.
There is a reason for that and why it DID evolve in Christianity...but that's yet another LONG post. LOL