To steer back toward the intent of the original post; it's more of a question of:
1. Is a good/benevolent/merciful God morally and ethically justified in the act of executing the sentence of eternal burning torment in literal fire to those whose theology is either wholly or partially correct?
This really is a trick question.
Your theology is either right or wrong. Not whole or partial.
If it's right then you worship God in the manner in which we should. In Holiness, reverence, fear and love. Knowing that we shouldn't fear what man can do to us, but to the one who can send us to hell, we should fear.
But no one deserves heaven. Not one of us. We are sinners, we are born with it and we all have done so.
If your theology is right, you know God to be loving, caring, all knowing, all powerful, the creator, that he holds wrath against those who sin, and because He is just will judge them righteously and with true justice.
About belief. The question isn't how you believe or what you believe in. The question is "Is what you believe in to be true?" And that is what sound theology does for us. It teaches who God is. What the Word of God is. The trinity and such.
Now you mainly speak of the Church of Christ. That's a whole different subject.
And the only thing I can say about that is. Does the teachings of the Church of Christ align with the Bible? Do they teach that sin is what sends you to Hell? Does it teach that Christ is the only way to be with the father? Does it teach that God even though a loving and benevolent God, is also a righteous and just God who will judge the sins of man?
If no to any of them and that's just a touch of what theology teaches us. Then you might want to seek in prayer with God another church. Like you I don't tear down this denomination. Nor do I judge them. I only ask where do they stand biblically and if they are contrary to God's word, then leave. If they are inline with God's word then stay and worship God.
Again, It doesn't matter what you believe, on that what you believe in to be true?
On God's justification. Of course He's justified to judge and part out judgment eternally. He is an eternal, righteous and just God.
Let me put it to you this way.
If I were to steal from my child, there isn't much He could do to me, right?
If I were to steal the same thing from my wife, well she could get angry and make me sleep on the sofa.
If I were to steal the same thing from a store, I'd go to jail
If I were to steal from the government, it's federal and I'd go to prison.
You see, I've stole the same thing from different people at different degrees of punishment. But no matter what, I'm a thief and I've broken God's command not to steal. And all those that I took from, I also sinned directly against God. Every sin you commit, no matter what it is, stacks wrath against you in front of God. You sin directly against Him. And He hates sin, He'll have nothing to do with it. It makes Him physically sick. So, because He is an eternal God, he will judge and pass judgment, eternally.
And this is true, no matter how much theology you know or don't know. There is no excuse.
Love is a state of empathy. We call people "sociopaths" when they cannot empathize with the suffering of others. I know that I suffer when I see anyone else suffering. Because I empathize with their suffering. It hurts me when others hurt. This is what love really is. If God is love; and He is - then He would necessarily empathize with the suffering of others, friend or foe. This means that if a truly loving God sentenced anyone to eternal literal horror and suffering, He must by His very nature be sentencing Himself to the same eternal suffering because of His empathy.
He does empathize with our suffering, that's why He came in the form of Man, In Christ he took the cross, so that we wouldn't have to.
He is love, but he is also just. And because He has no sin, which by nature and living we do, He needs not sentence himself to the same eternal suffering. Because he carried our sins, yet never sinned. He did pay for our sins, but we refuse to accept that payment and rebel against Him.
You misunderstand. God doesn't want to send us to Hell. In His mercy He has made a way out, Thru Christ. In his mercy He gives everyone a chance to know who Christ is, to repent of their sins and put their trust in Christ. Living and reading His Word daily. staying in prayer and taking the guidance of the Holy Spirit. But many don't do this, many rebel against God, by sinning. transgressing His laws.
What you say about him sentencing Himself, doesn't make sense. Let's apply this to a earthly judge.
You stand before a judge. You've been arrested for a grizzly murder, Your sorry and have shown remorse for what you've done and you not only tell the judge this but you show Him this. Reminding the judge that He is a kind and your sure a loving judge to his family and friends. So, that you remind the judge of His humanity, and go easier on you or even let you go.
The judge is a loving and kind man who loves His family, friends and he even cares about you in a way. But because he is the judge and because He does love all those others. He must place judgment upon you and sentences to death.
Now according to you, He should also place the judgment of death on himself, why? He didn't do the crime.
This also makes me question the state of heart of anyone who flippantly justifies their "literal eternal horror" doctrines, as being, without empathy, and not truly "loving their enemy": otherwise, they would also have empathy toward others in "eternal hell" and heaven could not exist for them since - through the empathy of love - they would be suffering with those that suffer.
Again, I believe you misunderstand just How God loves us.
He has a benevolent love toward us, as we live in our sins. How do I know? Because of His mercy and those who sin that are still alive and not in hell right now.
God's love is not unconditional. Jesus says if you love Him, you will have the love of the Father.
He says repent and place your trust in Him and you will have eternal life.
Those are conditions.
God hates sin, and he hates the soul of the wicked all the day long. And they will be punished for this. in Hell.
And again, we aren't talking "worst of the worst of humanity" alone; we are talking about basically good people, who were confused about religion, being judged to a horrific fate beyond imagination. At the hands of a loving/just/merciful God.
It's not beyond imagination. We sin against Him directly. We shake our puny hands at Him and say to Him we know better than Him on how we should live and that we are right.
The scripture tell us that the way of man seems right, but it is the way to death.
God is a loving God, a merciful God, but he is also righteous, Holy and Just.
and Eternal.