And you honestly believe that would "result in eternal damnation that is irrevocable."
Is that what happened to the Apostle Peter?
No that isn’t what happened to Peter, because Peter wasn’t being persecuted by anyone, nor did Peter renounce Jesus Christ as Messiah.
Peter knew and believed Jesus is the Son of God and the true Messiah.
Again, here are the scriptures that teach this principle.
But the ones on the rock are those who, when they hear, receive the word with joy; and these have no root,
who believe for a while and in time of temptation
fall away. Luke 8:13
But he who received the seed on stony places, this is he who hears the word and immediately receives it with joy; yet he has no root in himself,
but endures only for a while. For
when tribulation or persecution arises because of the word, immediately he stumbles.
Matthew 13:20-21
Stumble or Offend means to turn away from obeying or trusting one in authority. To desert them.
Stumble is what leads to departing from or falling away from Christ.
Beware, brethren, lest there be in any of you an evil heart of unbelief in
departing from the living God; but exhort one another daily, while it is called “Today,” lest any of you be hardened through the deceitfulness of sin. For we have become partakers of Christ if we hold the beginning of our confidence steadfast to the end,
Hebrews 3:12-14
- we have become partakers of Christ if we hold the beginning of our confidence steadfast to the end
This is another way of saying endure or believe or continue to have faith to the end.
again
And you, who once were alienated and enemies in your mind by wicked works,
yet now He has reconciled in the body of His flesh through death, to present you holy, and blameless, and above reproach in His sight—
if indeed you continue in the faith, grounded and steadfast, and are not moved away from the hope of the gospel which you heard, which was preached to every creature under heaven, of which I, Paul, became a minister. Colossians 1:21-23
if indeed
you continue in the faith, grounded and steadfast, and are not moved away from the hope of the gospel...
The “hope” of the Gospel is the salvation of our soul.
To inherit eternal life.
JLB