The question suffers from a false assumption : that salvation is through scripture, not the Lord himself.
Jesus said, Ye search the scriptures for ye think that in them ye have eternal life, John 5:39. Eternal life is not obtainable by mere study of the written record which God has provided.
'Salvation is of the Lord', Psalm 3:8, Psalm 62:1, Jonah 2:9.
It is the Lord himself who sends a man whose name is John. That is to say John the Baptist. And this man cited as 'John' does not just appear in that generation. The ministry of the baptism of repentance is sent in every generation by the Lord himself.
It is that ministry that speaks 'thus saith the Lord' and it is that ministry that speaks cogent and pertinent truth to the soul which brings the soul into convictions and works an awakening in the soul to spiritualities.
It doesn't happen just 'with the bible'.
There was a man sent from God.
This is the salvation of the Lord.
And it is perfectly clear throughout the Old and New testaments that God repeatedly sends his prophets and apostles and ministers (who follow in the steps of the apostles) to minister to the people.
Thus does the Shepherd call his sheep. And the sheep hear his voice and they follow him. They do not hear hirelings and thieves and wolves in sheep's clothing. They hear the voice of the shepherd.
Because they are sheep.
And not goats.
This has been true down through the centuries since Jesus Christ arose from the dead. The Lord sends his servants. And they preach the gospel. And the sheep hear the voice of the Lord calling them within that preaching.
And they follow the Lord.
And they are turned to a book that is unique above all books. Because the voice of the Lord can be heard through that book. Some pretend to have written books, that are not from the Lord, mimicking the Lord's book. But the sheep can tell.
They hear the voice of the true shepherd.
The doctrine of Christ is like meat to their soul. They feed among the lilies, Song 4:5. They have no appetite for that which is not good food. Inadvertently they may swallow down some foul matter, but they will vomit it up again.
These are the footsteps of the flock.
They follow men who were said to be ignorant and unlearned men. But these men had been with Jesus, Acts 4:13. And Jesus had chosen them and separated them and called them to a ministry and a service, Matthew 4:19.
This is life, not just words on a page.
Even when they go astray they hear a voice :
And thine ears shall hear a word behind thee, saying, This is the way, walk ye in it, when ye turn to the right hand, and when ye turn to the left. [Isaiah 30:21 KJV]
And One is sent to them to guide them :
Howbeit when he, the Spirit of truth, is come, he will guide you into all truth: for he shall not speak of himself; but whatsoever he shall hear, that shall he speak: and he will shew you things to come. [John 16:13 KJV]
God himself is their teacher and he watches over them :
I will instruct thee and teach thee in the way which thou shalt go: I will guide thee with mine eye. [Psalm 32:8 KJV]
He watches over them constantly :
Behold, he that keepeth Israel shall neither slumber nor sleep. [Psalm 121:4 KJV]
The sheep will be guided by all means and every means and they will be guided into all truth, they will be guided as to what to read and how to read it and what to avoid reading.
Many shall stumble and fall and turn aside to false ways, but not the sheep of Christ :
A thousand shall fall at thy side, and ten thousand at thy right hand; but it shall not come nigh thee. [Psalm 91:7 KJV]
Postscript : The Methods of Socrates
Plato described this rigorous method of teaching to explain that the teacher assumes an ignorant mindset.
Scholars such as Peter Boghossian suggest that although the method improves creative and critical thinking, there is a flip side to the method. He states that the teachers who use this method wait for the students to make mistakes. Socratic Method
It is interesting that someone should regard themselves as a teacher and then implement Socratic methods in order to 'teach'.
Let every man be swift to hear and slow to speak, is the way of Christ, James 1:19.