The Bible is inspired by God. If it is inspired by God, then it has his authority.
All Scripture is breathed out by God and profitable for teaching, for reproof, for correction, and for training in righteousness, (2 Timothy 3:16)
The Bible is reliable - we have 24,000 ancient copies of New Testament, some that date back to within 25 to 125 years from the original writings.
What is the Bible about? God's salvation through Jesus Christ - illumination Creation - God created everything good and man as his image bearer The Fall - mankind sinned, bringing God's judgment in toils, sickness, death Redemption - God sent His Son into the world to die for our forgiveness Consummation - God will end evil and death and will dwell with His people
How the Bible says it will change your life.
since you have been born again, not of perishable seed but of imperishable, through the living and abiding word of God; (1 Peter 1:23)
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. (Hebrews 4:12)
In our hands, it can be used to battle the enemy.
and take the helmet of salvation, and the sword of the Spirit, which is the word of God, (Ephesians 6:17)
But he answered, “It is written, “‘Man shall not live by bread alone, but by every word that comes from the mouth of God.’” (Matthew 4:4)
Your words were found, and I ate them, and your words became to me a joy and the delight of my heart, for I am called by your name, O Lord, God of hosts. (Jeremiah 15:16)
Is not my word like fire, declares the Lord, and like a hammer that breaks the rock in pieces? (Jeremiah 23:29)
For if anyone is a hearer of the word and not a doer, he is like a man who looks intently at his natural face in a mirror. For he looks at himself and goes away and at once forgets what he was like. But the one who looks into the perfect law, the law of liberty, and perseveres, being no hearer who forgets but a doer who acts, he will be blessed in his doing. (James 1:23-25)
Wrong responses to God's Word: Hear and do nothing (James 1:22)
Right responses to God's Word: Worship Conviction Action