I tend to concur with Brian's answers, but not fully.
The idea that hell is a 'necessary evil' to keep ppl on the 'straight and narrow' is totally debunked. It was an error of the early church (who used to teach it to catachumen as 'milk' and then progressively reveal the truth of salvation of all as 'meat' for the maturing disciple). I say error because it reflects a lack of trust in God and imposes a terrorist spiritual politics into the world. This is exactly how the Pharisees were inflicting the idea of Gehenna on to the people, and why Jesus is always 'flipping' it on on them eg, in the story of Richie and Lazarus, and the various indictments eg 'Sons of Hell', 'how are you gonna escape the judgment of hell', and so on.
The passage in Matt 10:28-33 (within the Matt 10 context) is very instructive on this, because it starts with the warning that God is more to be feared than man, because of His power to destroy the soul, but continues to say 'fear not, you're worth more than many sparrows' (v.31), then further to warn If you disown me on earth I'll disown you before the Father in heaven' (v.32-33). The chapter ends with a verse about a little kindness to brethren will ensure a disciple's reward is not lost (v.42).
Jesus here is busy correcting and redeeming the 'fear of God' from a 'spiritual terrorism' model to an 'offence against Love' model. The disciple should fear the shame of letting down their Father and friend, losing the honour and trust gained as the reward of keeping faith and walking in grace.
The terrorist model was again taken up by the Catholic church and particularly from the Emperor Justinian, who (with the help of Augustinian theology) reintroduced Roman law and anathematised the holy universalism of 'Origenism', in favour of an aristotelian materialistic naturalistic modality.
I believe that this was when God began to turn His face away from the church, and this led to the deepening of corruption, medievalism, the sack of Contantinople and the crusades, the schism, the reformation, modernism, and the total mess that variously calls itself 'the Church' we see today, that's willing to shut up shop for Passover/ Easter communion and pretend its ok to do it via Zoom, because of some fake health scare. Blind guides abound, so many under the sorceries of babylon. The mark of the Beast and revealing of the man of sin are just around the corner.
If people had been prepared to maintain the trust in God that giving others the simple apostolic good news that God was reconciled to them, and all they needed to do was to look to Christ to be free from the curse of sin and death, without the 'extra motivation' of a bonus afterlife fire insurance policy, we could all be living in the Kingdom now. But Satan got in and tempted man back to self-righteousness, vanity, cruelty and the night terrors.
Forgive us Father and save us from the tyranny of our flesh, for we are but dust, serpent-fodder.