It's the enemy's chief time-proven tactic: plant seeds of doubt on the veracity of Scripture. It was devastatingly effective in Eden. When someone begins to question absolute truth, they are foolishly rejecting reality and recklessly sailing into stormy waters without a rudder. Shipwreck is inevitable. Shipwrecked faith is always a conscious choice, not an unwitting occurrence. It ultimately involves the rejection and substitution of reality with a delusional fabrication. It means replacing foundational rock with shifting sand that is so esteemed by the world.
For deception to work, a fictional reality must be offered and accepted in lieu of genuine reality. A "candy-land" decoy that is a false misrepresentation of a wondrous future is used to lure the naive into the spider's web of deceit. Once we accept the fabricated reality, if we willfully persist in this delusion and doggedly reject numerous entreaties and offers to return to truth, we risk final abandonment with terrible consequences (Rom 1:24-32).
A good analogy is a Bering-sea fishing boat in dangerously high seas far from land that has lost its' rudder and is in danger of capsizing. It's only hope is a coast guard helicopter that has arrived after a long flight and is hovering overhead. Unable to lower the rescue basket to the violently pitching deck, the helicopter directs the crew to abandon the stricken ship and jump into the churning ocean where the rescue swimmer awaits with the rescue basket to lift them to safety. The crew is unwilling despite repeated pleas from the helicopter. They cannot accept the truth that their ship is fatally doomed and survival lies with the rescue swimmer waiting in the violent waves. Finally, because of low fuel the helicopter makes one last unsuccessful urgent plea before being forced to abandon the doomed crew. No one is rescued and all subsequently lose their lives.
This charge I entrust to you, Timothy, my child, in accordance with the prophecies previously made about you, that by them you may wage the good warfare, holding faith and a good conscience. By rejecting this, some have made shipwreck of their faith, among whom are Hymenaeus and Alexander, whom I have handed over to Satan that they may learn not to blaspheme.(1 Tim 1:18-20, ESV)