Even those in Christ are destined to physical death!
The Bible says we must be born again! That's not a second birth, that's a spiritual birth through the Spirit of Christ within for those who before being born again were spiritually dead in trespasses and sins.
Not so! They were beheaded because in life before they were killed they were redeemed and they remained faithful unto death. That's why John tells us they are living souls in heaven after physical death, because before they were martyred for their faith they lived and reigned with Christ during their lives, symbolically written a thousand years. Because they have eternal life through the Spirit of Christ within them, and who will be with them until they are reunited with an immortal/incorruptible resurrected body of flesh, made physically alive again through their spirit that returns with Christ.
Destined to physical death?
No. That is the point they receive a permanent incorruptible physical body, ie eternal life. That is not being destined to death, but everlasting life.
The word "dissolved" in 2 Corinthians 5:1 is an interesting word. When a contract is nullified it is dissolved. The union between Adam's dead flesh and the soul is nullified/dissolved at the point of physical death. In fact Paul wanted this contract with death to be dissolved as soon as possible, but knew that God still needed him in this current contract.
The thief on the Cross would be in Paradise that day, when the contract with Adam's dead corruptible flesh was dissolved.
The Bible says we must be born again is not a second birth?
You are missing the point like Nicodemus in John 3.
The first birth is physical through the water of the womb. The second birth is spiritual through the power of the Holy Spirit.
Two births, one physical the other spiritual. The word two implies a first birth and a second birth. Not a second physical birth. Jesus said you must be born again. You are having issues with that word "again".
To physically live again involves the physical death to happen, in order to live again. The second birth is not being physically born again, it means the spiritual birth while one is physically alive. The first resurrection cannot be the spiritual birth while one is still physically alive. The first resurrection can only happen after the first death, ie physical death. Jesus experienced a first resurrection 3 days and 3 nights after physical death. Jesus is also the Resurrection and the Life. Jesus is not the first resurrection experience. The firstfruits in Christ are all those who have experienced the first resurrection. They are physically alive in Paradise, and have been since 30AD.
Those beheaded were faithful in life?
No they were not! If they had been, they would have left earth prior to those 42 months in which they chose to chop their heads off.
You have attached some spiritual symbolic meaning to what John refers to as merely a physical act. Do you not accept this is literally a physical head being removed from a literal physical body? Having a physical head removed is the only act of faith they have ever done in their entire physical life. It is either receive a physical mark, or remove their physical head. This option is only available during the last 42 months prior to the battle of Armageddon. This is not some ongoing symbolic act that is not physical over hundreds of years.
You are also missing the point of being martyred. The word "witness" in that verse is their only confession of faith. They were not martyred because they had faith. They chopped their heads off as their only act of faith. Some translations use testimony. The Greek word martur is the root word of martyr.
The concept is not as dying for their faith. The concept is that their testimony or witness was their only acceptance of Jesus Christ. The point of their standing in judgment before thrones also points to the fact they did not have the second birth. The judgment given to them was both the second birth and physical life at the same time. So they did not receive the second birth while physically alive. It was granted to them as they were standing as souls in judgment. They were made alive at that point. And that being made alive, is what John called the first resurrection. The first time that term is used in Scripture.
There is a difference between who is judged after physical death, and who is Judged in Christ on the Cross. Those with the second birth of the Holy Spirit are not judged, not even at the GWT Judgment. Those of the second birth are not part of the dead, in no way, shape, or form who stand at the GWT Judgment. And those judged prior to the thousand years before thrones, are not judged again for the second death.