So how Satan who is spirit able to sin in heaven? And why won't humans be able to sin in heaven in our spirit form.
Eze 28:14 Thou art the anointed cherub that covereth; and I have set thee so: thou wast upon the holy mountain of God; thou hast walked up and down in the midst of the stones of fire.
Eze 28:15 Thou wast perfect in thy ways from the day that thou wast created, till iniquity was found in thee.
God made the angels perfect but He gave them a choice and some angels chose to rebel.
The angels cannot be redeemed for they are one component so when they sinned there was no place to put off the sin, and they tainted their whole being.
Isa 65:17 For, behold, I create new heavens and a new earth: and the former shall not be remembered, nor come into mind.
Rev 21:4 And God shall wipe away all tears from their eyes; and there shall be no more death, neither sorrow, nor crying, neither shall there be any more pain: for the former things are passed away.
Gal 3:27 For as many of you as have been baptized into Christ have put on Christ.
1Co 15:44 It is sown a natural body; it is raised a spiritual body. There is a natural body, and there is a spiritual body.
Rom 7:18 For I know that in me (that is, in my flesh,) dwelleth no good thing: for to will is present with me; but how to perform that which is good I find not.
People are flesh and soul and all sin resides in the flesh so when the flesh is put off they will not sin.
So when they go to be with Jesus they cannot sin for they will only go by the ways of the Spirit.
People can be saved because they reside in the flesh so if they are saved and put off the flesh they put off the sin.
At the new earth, the New Jerusalem, the angels, and people will not remember anything prior to that and will feel like they always been there and nowhere else so they will not know about sin, and rebellion, and will not be sad for those that were not believers.
At the New Jerusalem you will not even remember the people you knew who were saved for to know them is to remember the earth, but the former shall not be remembered, nor come to mind.