That is very much incorrect, Runningman!
To "perish" is speaking of spiritual death, which is the "second death." The first death would be a physical death, the second death is the spiritual death, which is the soul of man perishing.
Rev. 21:8
"But the fearful, and unbelieving, and the abominable, and murderers, and whoremongers, and sorcerers, and idolaters, and all liars, shall have their part in the lake which burneth with fire and brimstone: which is the second death."
You see, there are 2 resurrections in Rev. 20, one for the just, who have escaped the second death, and the resurrection of the unjust.
It is made clear in Rev. 20:14-15,
"And death and hell were cast into the lake of fire. This is the second death.
And whosoever was not found written in the book of life was cast into the lake of fire."
The "second death" is spiritual death which is eternal separation from God in the lake of fire.