All scripture is inspired by God and is useful to teach us what is true and to make us realize what is wrong in our lives. It corrects us when we are wrong and teaches us to do what is right. God uses it to prepare and equip His people to do every good work.
II Timothy 3:16-17 (NLT)
For no prophecy recorded in Scripture was ever thought up by the prophet himself. It was The Holy Spirit within these godly men who gave them true messages from God.
II Peter 1:20-21 (TLB)
We always thank God that when you heard The Word of God from us, you believed it. You did not receive it as from men, but you received it as The Word of God. That is what it is. It is at work in the lives of you who believe.
I Thessalonians 2:13 (NLV)