I agree with most you say, Lafon, but to use
Hebrews 9 and say flesh must die is to miss the point he made by saying that.
Heb 9:27-28 KJV And as it is appointed unto men once to die, but after this the judgment: (28)
So Christ was once offered to bear the sins of many; and unto them that look for him shall he appear the second time without sin unto salvation.
Verse 28 is the point. Because we were appointed to die once, Jesus died AS US. So, without having yet died ourselves in the flesh, that death of His counts as ours, or else He did not bear our sins.
Why do we die? Sin. So, Jesus took our sins in His own death, so we can say we already died! If
Hebrews 9 is not allowing for us to say we already died, then we were never baptized into His death.
IN short, verse 27 cannot be understood without verse 28.