this is not scripture just your opinion....seal as in mark of ownership or sealed as closed box ...the seal is a mark of ownership.....if one is not worthy of that mark on the day of redemption God takes his mark and they go where they belong....that is why he warns ...
Ephesians 4:30
And grieve not the holy Spirit of God, whereby ye are sealed unto the day of redemption.
Look NOBIRTH.....you should actually believe the scriptures you post instead of standing on your own merits for salvation....go study the very verse you quoted as it teaches a wonderful truth about being SEALED (GOD'S STAMP that YOU BELONG TO HIM) until the day of BUY BACK (REDEMPTION) God does not UNMARK those who have been SEALED.....such foolish ignorance for sure!