Well... according to the Bible/Tenach and NT there are 3 heavens. God living in the 3rd, the 2nd where the Devil currently lives and travels between 2nd and 1st heavens, the 1st being the Earth's atmosphere...
So, if this were the case, moving up one level would mean ascending to where the "devil" is headquartered. Who told you 4th Density was a good place? Ra? In Hebrew, Ra means "Evil", "Calamity"... Certainly a place where "keep on doing what yer doing" does for all the people who are unsaved. Keep reaching them. There's a difference between the hopelessly corrupt and dead (sociopaths) and the lost in ego/flesh (sleeping).
Kabbalah looks at it as 10 worlds, but that is a whole different thing all together and has a very unique application. For great authentic Kaballah, taught by Rav Leitman PHD I recommend the free courses from the ARI institute (www.percievingreality.com). Authentic Kabballah is the science of transforming one's character, emotion, and will to that of God's. Nothing more, nothing less... save that talk for another day....
Now weather that has anything to do with Hell who knows, but it doesn't sound great. Hell in the bible is translated from the word "Grave" and is not to be confused with "lake of fire" (Gehinom). I will not get into this. This is simply about earth's destruction or renewal I guess since we are on the topic.
I know the bible speaks nothing of ascending to the next level. A study of Rev. could be understood that the "Great and Terrible Day of The Lord" Destruction/Judgement or "Marriage Supper of the Lamb" (New Earth/Eden) as existing on the same day. Day 7. This is a day with God (Represented by the Menorah/7 Lamp-stands) or a day "Without" (A desolated temple)... 1 day = 1000 Years. Then the cycle begins again elsewhere, but in a perfect world without the fall. So the rapture appears to be nothing more than a quantum shift... a big cosmic fork in the road leading down one of two paths.
However I believe Jesus' death, burial, and resurrection to be an event that transcends time and space. An event saving both body and soul from judgment. An event that cannot be stopped or ignored any more than we can choose to ignore the sun or gravity. That is simply done. That's the good news. The other good news is that many are true Christians who don't know it. The bad news is there are they who think they are Christians who are not. A true disciple of Christ looks with his spiritual eyes. God is Love. And the teachings of Christ go on and on and on about how the IAM lives within us and that we are children of God. Much like a drop of water (each of us) compared to the Ocean (God). In Luke, Christ is asked "What must I do to be saved". He did answered with the parable of the Good Samaritan who Jesus went out of His way to make sure it was understood that the Samaritan was by all accounts not a religious person. Jesus went through painstaking efforts to teach that we can serve Love (God) or Fear (Lack, Greed, Mammon). To teach about always being aware of the light, and seeking it. And to be wary of becoming fear or self minded. His real sacrifice a testimony to the work each of us are to do through the help of the Holy spirit. That is to die to self, and live as unconditionally loving beings. The entire bible from revelation of God to revelation of God is taught as one of "Progressive Revelation". That is at first God is seen as "Out There" separate from us. Next He is seen as "A human going thru the transformation of killing his Ego/Satan", Next revealed to us as the Holy Spirit that lives "within" the temple of our bodies. (This is what the Eye of Providence symbolizes). Since in this Quantum world we are and manifest what we focus on, the Bible STRESSES keeping our focus on Jesus (our goal to be just like him, one with the father just like him, and just as powerful and to do even greater things) and the Holy Spirit will help us do the work of transforming us into His likeness. Lucky for us, we don't have to be perfect as we will be transformed in the twinkling of an eye. But it is important to remember "Perfect Love casts out all fear". Forgive always, and set aside judgement, even your enemies.
I could go on and on about the teachings of the Bible, The Mishnah, and many Rabbinical writings, and some Kabbalistic writings (Not NagHamadi as It's not authentic Judeo-Christian so the role-reversal and reverse-symbolism can cause some confusion in the psyche). I have absolutely no idea why or how things in the Christian world have gone where they've gone, or how they believe what they believe or teach what they teach. (For instance Big Bang Theory and Evolution. The bible supports Evolution Theory... how they missed this is beyond me) Instead of working to transform into His likeness (Unconditional Love/United), they seem to preach a God that is in the image of man (Judgmental and Separate). Keep your eyes on Jesus Christ and who HE IS, the beholder becomes and experiences what he perceives. I don't mean the Jewish Carpenter, or a Jesus Hanging on the Cross. I didn't say who HE WAS and neither does the Bible. It's nice to be excited about the wrapping or packaging our Creator gave to mankind. But that is just the outer garment. Who was Jesus "Spiritually"? That is the focus I am talking about. That is who is Judge, and our truest highest self is God as that is where we got our "spark".
Weather or not judgement is case-by-case or upgraded to a class-action suit, who knows 
My hope is for the whole world to move on to a better existence, and that is my prayer.
"As HE IS. SO AM I in THIS world."
Anyways, I personally do not know much about the LOO where I assume much of the stuff in this site comes from, but from what I have read is a lot of mixed-truth, but that's for you to decide. Then again that's what I see when I look anywhere but the Bible, and even then I haven't heard anyone to interpret the Bible it the way I understand it. I've been walking the path of Christ and studying Hebraic/Judeo-Christian religions for almost 30 years on the nose. Maybe it's time I step out and start ministering. I'm just some guy who would rather remain anonymous who would like to help others grow in unity regardless of religious creed or background, and to walk upright in God with the world underneath their feet where it belongs and not on their shoulders - reigning in life.
Apologies for the terrible spelling/syntax/grammar. I'm a bit rushed right now. So many things to do...
So, if this were the case, moving up one level would mean ascending to where the "devil" is headquartered. Who told you 4th Density was a good place? Ra? In Hebrew, Ra means "Evil", "Calamity"... Certainly a place where "keep on doing what yer doing" does for all the people who are unsaved. Keep reaching them. There's a difference between the hopelessly corrupt and dead (sociopaths) and the lost in ego/flesh (sleeping).
Kabbalah looks at it as 10 worlds, but that is a whole different thing all together and has a very unique application. For great authentic Kaballah, taught by Rav Leitman PHD I recommend the free courses from the ARI institute (www.percievingreality.com). Authentic Kabballah is the science of transforming one's character, emotion, and will to that of God's. Nothing more, nothing less... save that talk for another day....
Now weather that has anything to do with Hell who knows, but it doesn't sound great. Hell in the bible is translated from the word "Grave" and is not to be confused with "lake of fire" (Gehinom). I will not get into this. This is simply about earth's destruction or renewal I guess since we are on the topic.
I know the bible speaks nothing of ascending to the next level. A study of Rev. could be understood that the "Great and Terrible Day of The Lord" Destruction/Judgement or "Marriage Supper of the Lamb" (New Earth/Eden) as existing on the same day. Day 7. This is a day with God (Represented by the Menorah/7 Lamp-stands) or a day "Without" (A desolated temple)... 1 day = 1000 Years. Then the cycle begins again elsewhere, but in a perfect world without the fall. So the rapture appears to be nothing more than a quantum shift... a big cosmic fork in the road leading down one of two paths.
However I believe Jesus' death, burial, and resurrection to be an event that transcends time and space. An event saving both body and soul from judgment. An event that cannot be stopped or ignored any more than we can choose to ignore the sun or gravity. That is simply done. That's the good news. The other good news is that many are true Christians who don't know it. The bad news is there are they who think they are Christians who are not. A true disciple of Christ looks with his spiritual eyes. God is Love. And the teachings of Christ go on and on and on about how the IAM lives within us and that we are children of God. Much like a drop of water (each of us) compared to the Ocean (God). In Luke, Christ is asked "What must I do to be saved". He did answered with the parable of the Good Samaritan who Jesus went out of His way to make sure it was understood that the Samaritan was by all accounts not a religious person. Jesus went through painstaking efforts to teach that we can serve Love (God) or Fear (Lack, Greed, Mammon). To teach about always being aware of the light, and seeking it. And to be wary of becoming fear or self minded. His real sacrifice a testimony to the work each of us are to do through the help of the Holy spirit. That is to die to self, and live as unconditionally loving beings. The entire bible from revelation of God to revelation of God is taught as one of "Progressive Revelation". That is at first God is seen as "Out There" separate from us. Next He is seen as "A human going thru the transformation of killing his Ego/Satan", Next revealed to us as the Holy Spirit that lives "within" the temple of our bodies. (This is what the Eye of Providence symbolizes). Since in this Quantum world we are and manifest what we focus on, the Bible STRESSES keeping our focus on Jesus (our goal to be just like him, one with the father just like him, and just as powerful and to do even greater things) and the Holy Spirit will help us do the work of transforming us into His likeness. Lucky for us, we don't have to be perfect as we will be transformed in the twinkling of an eye. But it is important to remember "Perfect Love casts out all fear". Forgive always, and set aside judgement, even your enemies.
I could go on and on about the teachings of the Bible, The Mishnah, and many Rabbinical writings, and some Kabbalistic writings (Not NagHamadi as It's not authentic Judeo-Christian so the role-reversal and reverse-symbolism can cause some confusion in the psyche). I have absolutely no idea why or how things in the Christian world have gone where they've gone, or how they believe what they believe or teach what they teach. (For instance Big Bang Theory and Evolution. The bible supports Evolution Theory... how they missed this is beyond me) Instead of working to transform into His likeness (Unconditional Love/United), they seem to preach a God that is in the image of man (Judgmental and Separate). Keep your eyes on Jesus Christ and who HE IS, the beholder becomes and experiences what he perceives. I don't mean the Jewish Carpenter, or a Jesus Hanging on the Cross. I didn't say who HE WAS and neither does the Bible. It's nice to be excited about the wrapping or packaging our Creator gave to mankind. But that is just the outer garment. Who was Jesus "Spiritually"? That is the focus I am talking about. That is who is Judge, and our truest highest self is God as that is where we got our "spark".
Weather or not judgement is case-by-case or upgraded to a class-action suit, who knows My hope is for the whole world to move on to a better existence, and that is my prayer."As HE IS. SO AM I in THIS world."
Anyways, I personally do not know much about the LOO where I assume much of the stuff in this site comes from, but from what I have read is a lot of mixed-truth, but that's for you to decide. Then again that's what I see when I look anywhere but the Bible, and even then I haven't heard anyone to interpret the Bible it the way I understand it. I've been walking the path of Christ and studying Hebraic/Judeo-Christian religions for almost 30 years on the nose. Maybe it's time I step out and start ministering. I'm just some guy who would rather remain anonymous who would like to help others grow in unity regardless of religious creed or background, and to walk upright in God with the world underneath their feet where it belongs and not on their shoulders - reigning in life.
Apologies for the terrible spelling/syntax/grammar. I'm a bit rushed right now. So many things to do...