No one person spoke more about Satan and Hell than Jesus Christ. One thing you will find out about Universalists is that many if not all also subscribe to the notion that Satan is not a spiritual being. They have to do this in order to make their "Universalism" work.
Why? Because God made us as choosing beings and we derive our spiritual character, behaviour and identity from one of two sources. God or Satan. One cannot create their own spiritual identity as New Agers believe. Atheists believe you can have your own identity apart from a "so-called" God and Satan. This is the lie from of old that "you can be as gods." One must derive their spiritual identity, behaviour and character from a person.
So, on one hand, you cannot say that we derive our spiritual character (as choosing creatures) from God, but then if we do evil then it is just because we chose NOT God. Not true! We chose Satan. You cannot even derive your character and identity from the absence of good. Because that would mean that you created evil and we humans cannot create something that does not exist. Evil does exist and it exists in the person of Satan. When you choose Evil, you are choosing to align yourself with Satan. Plain and simple.
Universalists don't like the fact that Satan exists because then they would have the added burden of proving that God's universal reconciliation will work even for those who choose Satan as their image of character and behaviour. It becomes more difficult for them to say that God will save all mankind even those who choose to derive their character and behaviour and spiritual identity from the one that WILL be in the Lake of Fire.
Jesus said, "You are of your Father the Devil".
So, we either eat of the Tree of Life (abide in Christ) or we eat of the Tree of Knowledge of Good and Evil (abide in Satan) and we will grow the particular fruit from each tree.
Universalism ignores the existence of Hell for all those who align themselves with Satan because they ignore the existence of Satan.
There are several kinds of Universalism and you will find these beliefs in New Age religions, Wicca and various forms of the Occult. They will say that Satan and God share an equal dualism but they don't (Satan is meant to be overcome and we are instructed to overcome evil with good) and that Satan will eventually be saved, too. Other beliefs say that God knows Good and Evil and that Satan is part of Him. But the Bible says there is no evil in God at all. And that when we are tempted we should not say we are tempted of God because He cannot tempt anyone. There are so many various beliefs concerning Universalism that it borders on confusion and I would say it is pure confusion.
Satan's lie to Eve was that God was lying to them and that they would be like Him knowing good and evil. The lie was that they would be like God. But God does not know evil experientally like Adam and Eve were about to know it. God knows Evil by virtue of the fact that it is contrary to His nature. Anything that is contrary to God's nature is Evil. God does not want us to know the difference between good and evil by experiencing evil. Anyway, I digress.
Universalism or Ultimate Reconciliation has been making inroads more and more into mainstream Christianity and it is driven by major changes in our culture (political correctness, don't judge people) to bring the Church into slumber. Afterall, if God has saved us all regardless of how we live, why should we preach Christ or live holy lives? Of course, it is really driven and propagated from the bowels of Hell by Satan himself.
Ask yourself this question:
Do you think God will countenance another rebellion in heaven? Heaven is for those who choose Christ and not Satan. Yes, the world will say that Jesus is very narrowminded. That is true from the world's perspective. When it comes to evil, Jesus is very narrowminded and Satan is very broadminded. Jesus made no apologies in His earthly ministry.
Remember that God created us with only two choices, not three, not four. Good and Evil, Life or Death, Blessing or Cursing, God or Satan, Heaven or Hell.
Pilgrim