In Short

1

God spoke through the writers of each book of the Bible.

“The Advocate, the Holy Spirit, whom the Father will send in my name, will teach you all things and will remind you of everything I have said to you.”
John 14:26

“All Scripture is God-breathed and is useful for teaching, rebuking, correcting and training in righteousness, so that the servant of God may be thoroughly equipped for every good work.”
2 Timothy 3:16-17

“Above all, you must understand that no prophecy of Scripture came about by the prophet’s own interpretation. For prophecy never had its origin in the will of man, but men spoke from God as they were carried along by the Holy Spirit.”
2 Peter 1:20-21

2

The Bible’s message is centered on the forgiveness of sins through Jesus.

(Jesus speaking:) “You study the Scriptures diligently because you think that in them you have eternal life. These are the very Scriptures that testify about me.”
John 5:39

“Then [Jesus] opened their minds so they could understand the Scriptures. He told them, ‘This is what is written: The Christ will suffer and rise from the dead on the third day, and repentance and forgiveness of sins will be preached in his name to all nations.'”
Luke 24:45-47

“All the prophets testify about [Jesus] that everyone who believes in him receives forgiveness of sins through his name.”
Acts 10:43

3

The Bible is powerful and gives life.

“The words I have spoken to you are spirit and they are life.”
John 6:63

“I am not ashamed of the gospel, because it is the power of God for the salvation of everyone who believes.”
Romans 1:16

“For the word of God is living and active.  Sharper than any double-edged sword, it penetrates even to dividing soul and spirit, joints and marrow; it judges the thoughts and attitudes of the heart.”
Hebrews 4:12