The Bible is true, trustworthy, authoritative, and infallible in all matters of the Christian faith because it is totally inspired, stewarded, and externally verified by the Spirit of truth.
Sanctify them in the truth; your word is truth.
When the Spirit of truth comes, he will guide you into all the truth, for he will not speak on his own authority, but whatever he hears he will speak, and he will declare to you the things that are to come. He will glorify me, for he will take what is mine and declare it to you.
2 Timothy 3:16-17
All Scripture is breathed out by God and profitable for teaching, for reproof, for correction, and for training in righteousness, that the man of God may be complete, equipped for every good work.
For the word of God is living and active, sharper than any two-edged sword, piercing to the division of soul and of spirit, of joints and of marrow, and discerning the thoughts and intentions of the heart.
2 Peter 1:21
For no prophecy was ever produced by the will of man, but men spoke from God as they were carried along by the Holy Spirit.
Cherry picking what is inspired and not inspired concerning the living Word is not a mark of the indwelling Spirit.
Biblical Christians trust that the Spirit has delivered God’s infallible Word through time and flawed vessels. If you don’t, you should take a step back with a cold hard look at yourself.
Therefore, my beloved, as you have always obeyed, so now, not only as in my presence but much more in my absence, work out your own salvation with fear and trembling
“When there’s something in the Word of God that I don’t like, the problem is not with the Word of God, it’s with me.”
— R.C. Sproul