"It should be recognized that it is impossible to determine with certainty any date prior to the beginning of historical records—except, of course, by divine revelation. Science, in the proper sense, is based on observation, and we have no records of observation except historical records." Henry Morris, Ph.D.
The Bible As God's Word
1. God has spoken audibly, first to Adam and Eve, to patriarchs, to and through prophets, and to Jesus' disciples.
2. God sends His word (communication) visibly in the form of dreams by night or visions by day.
3. God's word emphasized recording and dispersion of His communications.
4. God communicates Himself to us through His acts of creation, in His dealings with mankind, and by sustaining the underlying laws of the universe.
5. The final Word of God to man is through His Son who came and dwelt among us, emphasized His love and care, and gave up his life to prove it.
The Bible is the word of God.
Do you know there is a difference between inspiration and revelation, and did you know that apostolicity was historically the test for accepting the text of the canon of the New Testament? We can understand that Shakespeare or Handel or others were inspired (of God), at least some of the time, without putting their works on the level of Scripture. New Testament scripture is on a level beyond inspiration, it is based upon apostolicity. Apostolicity means that an epistle, Gospel, or letter of the New Testament had to be written by an apostle or someone closely associated to an apostle. That means they were written by first person and second person witnesses to the manner of life, miracles, signs, and teaching of Jesus Christ.
The Validity of the Holy Scriptures
"[The Bible] is not only an armor, but also a whole armory of weapons, both offensive and defensive; whereby we may save ourselves and put the enemy to flight. It is not an herb, but a tree, or rather a whole paradise of trees of life, which bring forth fruit every month, and the fruit is for meat1, and the leaves for medicine. It is not a pot of Manna, or a cruse2 of oil, which were for memory, or for a meal's meat1 or two, but as it were a shower of heavenly bread sufficient for a whole host, be it ever so great; and as it were a whole cellar full of oil vessels; whereby all our necessities may be provided for, and our debts discharged. In a word, it is a Panary3 of wholesome food, against fenowed4 traditions; a Physician's shop (Saint Basil called it) of preservatives against poisoned heresies; a Pandect5 of profitable laws, against rebellious spirits; a treasury of most costly jewels, against beggarly rudiments; finally a fountain of most pure water springing up unto everlasting life. And what marvel? The original thereof being from heaven, not from earth; the author being God, not man; the inditer6, the holy spirit; not the wit of the Apostles or Prophets; the Penmen such as were sanctified from the womb, and endued with a principal portion of God's spirit; the matter, verity, piety, purity, uprightness; the form, God's word, God's testimony, God's oracles, the word of truth, the word of salvation, etc.; the effects, light of understanding, stableness of persuasion, repentance from dead works, newness of life, holiness, peace, joy in the holy Ghost; lastly, the end and reward of the study thereof, fellowship with the Saints, participation of the heavenly nature, fruition of an inheritance immortal, undefiled, and that never shall fade away: Happy is the man that delighted in the Scripture, and thrice happy that meditateth in it day and night."
Written about 1610 by Miles Smith in the preface to the original King James translation.
1. food; 2. small bottle; 3. breadbasket; 4. musty or filthy; 5. collection of texts; 6. one who causes to be written
Resources:
The following link explains in detail how we know the scriptures are from God.
bible.org/article/evangelicals-and-canon-new-testament