God did not just let the men and women of the Bible write their stories and leave it at that, He allowed certain provisions to be implemented regarding His Scriptures.
First of all, we will begin with Paul the Apostle. He wrote:
"The Spirit itself beareth witness with our spirit, that we are the children of God." (Romans 8:16; KJV).
The Holy Spirit is a testifier, meaning that He will speak to our spirits to let us know if something is true. Paul wrote again:
"Now we have received, not the spirit of the world, but the spirit which is of God; that we might know the things that are freely given to us of God." (1 Corinthians 2:12).
We can know of things by observing material things, but things that are spiritual cannot be known by simple observation from earth. If we went to Heaven I suppose we would know without a doubt that Heaven existed. But if that does not happen, then records of people who have written of Heaven is the next best thing, and God Himself will vouch for those who tell the truth.
"Peace I leave with you, my peace, I give unto you: not as the world giveth, give I unto you. Let not your heart be troubled, neither let it be afraid." (John 14:27).
Paul wrote:
"And the peace of God, which passeth all understanding, shall keep your hearts and minds through Christ Jesus." (Philippians 4:7).
Have you heard of the word "ineffable?' It means "incapable of being expressed in words." Merriam-Webster's Collegiate Dictionary, 11th Edition (2004), p. 638. When Paul says the peace of God "passeth all understanding," he is saying that he cannot explain to you how it feels, it is something you have to experience personally. It is a very personal experience, it is just between you and God. Everybody else has to approach Him one-on-one, tete-a-tete. Read the Parable of the Ten Virgins in Matthew 25:1-13 (pay attention to the oil's significance). Jesus liked to use parables to couch eternal truths within the stories, by studying them you may receive insight from them. He couched truths in parables to prevent those who are not ready for truth, but those who are ready will see the connections within them.
"And the disciples came, and said unto him, Why speakest thou unto them in parables?
"He answered and said unto them, Because it is given unto you to know the mysteries of the kingdom of heaven, but to them it is not given.
"For whosoever hath, to him shall be given, and he shall have more abundance: but whosoever hath not, from him shall be taken away even that he hath.
Therefore speak I to them in parables: because they seeing see not; and hearing they hear not, neither do they understand." (Matthew 13:10-13).
God's truth has the propensity for injuring the unprepared, so being prepared to receive the truth is very crucial. If God came and told you a truth and you did not follow it, you are liable for that open truth.
"For if we sin willfully after that we have received the knowledge of the truth, there remaineth no more sacrifice for sins." (Hebrews 10:26).
Jesus cannot help you if you sin after receiving a certain truth. Now do not worry about sinning altogether, we all do that according to Paul. "For all have sinned, and come short of the glory of God." (Romans 3:23).The sin is in that particular truth revealed to you, whatever that might be, and since we do not know what He will reveal to an individual (besides His peace) we cannot say what the sin is.
In times like that, ignorance is indeed bliss.
So listen to Jesus, and count "the cost" of being a disciple (Luke 14:25-35).
Trifle not with the things of God.