What is a Bereans? Can't you tell whether things are true or not? How do you know the bible is true? How do you know some evil person didn't stick lies in there to trip you up. That is what Roy wants you to find again, your ability to see right and wrong for yourself. The bible will witness to it.
Now the Bereans were of more noble character than the Thessalonians, for they received the message with great eagerness and examined the Scriptures every day to see if what Paul said was true. Many of the Jews believed, as did also a number of prominent Greek women and many Greek men." (Acts 17:10-12)
Reason alone can reveal some truth to men, but it cannot reveal spiritual truth. Calvin wrote. “The testimony of the Spirit is superior to reason. Scripture carrying its own evidence along with it deigns not to submit to proofs and arguments, but owes the full conviction with which we ought to receive it to the testimony of the Holy Spirit.”
The Holy Spirit is indeed the Comforter that God sends and He is the One who reveals all truth.
God cannot lie, and He says over and over in the scriptures that His Word is Truth.
John MacArthur explains it this way:
I believe the Bible to be the Word of God, the same way I believe Jesus Christ to be the Son of God, the same way I believe God to be the God of Scripture who is a holy Trinity, the same way I believe that salvation is by grace alone through faith alone and that is because God has wrought that confidence in my heart. Does it stand the test of reason? Yes. But that is not the source of that conviction. It is the inner witness of the Spirit to our hearts. It is the Spirit that witnesses with our spirit that we are the children of God. It is the Spirit that witnesses with our spirit that the Word of God is in fact true and reliable.