NOT?
This was article is about the phase in a person's life regarding salvation, in this case Simon Peter's.
If you deny Christ as your Owner and Master when it becomes inconvenient, or about identification with Him even when your death may be the cost, Jesus says that you are not His, and He will deny you before His Father when the time comes to be judged as to your eternal disposition.
That means if this is your state, then you do not have the standing of The Father considering you redeemed from Hell, nor the state of being His Spirit-begotten child.
That is not my doctrine. It is the doctrine of the Lord Jesus Christ as recorded in my Bible, and which is here shown by Peter's example. Like him, if you have a complete reversal of mind through spiritual rebirth, as Peter did on the day of Pentecost succeeding Jesus' death and resurrection, then you--like Peter--may be saved.
That's up to you, I am only an observer, not a judge.
In wartime; under questioning by the enemy; holding onto the truth for dear life can lead to your death.
Abraham said, "She's my sister."
Rahab said, "I don't know which way they went."