I feel like you just avoided my response entirely. Oh well. Goodnight.
About your question, its both.... things are good because God says its good and because it really is good.
Obedience is impossible by ourselves, perfection is the standard of God.
Have you ever lied?
Have you ever stolen?
Have you ever lusted?
Have you ever gotten angry?
Have you ever not put God as #1 in your life?
Have you dishonored your father and/or your mother?
Are you guilty? If so, you'd be eligible for hell.
The list goes on, we're not perfect... we've made mistakes in our lives and because of those mistakes we deserve hell because those mistakes make us evil.
The thing to notice here is that God doesn't make compromises, his a good God and a Just God and WILL take care of Justice and bring judgement to EVERY evil thing thats happened. And his going use hell as punishment, forever tormented.
But we also have a God of Love and Grace (mercy is within grace) and here's more light to your question about obedience. God sent Jesus Christ, himself God, to become a man and Jesus Christ did the obedience part. He was/is perfect and fulfilled the standard of God. He was/is a good man. That very important part is done, the obedience part, for the sake of salvation. And then he sacrifices himself, to pay our debt that we deserve which is death, hell. And resurrects showing us that he did conquer death. So that if you believe in him and his status, through Jesus Christ, man/God... we can link up to God and have a relationship with him. He speaks through others, in signs, spiritual visions... those 3 have happened to me so I know.
The obedience on the part of Christians, it's not for salvation but because we love God and it's right, even tho hell is no longer something to fear... thanks to Jesus Christ. God wants us to be servants and do whats good, ALWAYS.
Some background:
Were composed of 3 layers, our flesh, what you can observe physically. Our soul, what we can observe with our ears to some extent, I repeat to some extent because people lie, listening to people and their personality. Lastly, our spirit, the place where only God can dwell and activate.
Alright now unfortunately because our flesh and soul is still infected, Christians will still be suspect-able to sin, we still have flesh that's accustomed (think reflexes) to sin and our soul isn't perfect either. But God in our spirits will move more into the soul and our soul will guide our flesh and because of God we will be capable of doing perfect good things, credit to God for that.
Without God tho, your in sin and your bound to hell, so I strongly recommend you read the Bible, John is a good place to start and New International Version seems pretty easy to understand. But God will be the one that truly teaches us through the Holy spirit.
Judgment or Love?
Hell or Jesus Christ?
Your choice.