truth can be imparted directly from God into your heart. the bible is just a book, it can be a guidepost and a light, or it can be a stumbling block. just as the torah was a stumbling block to the pharisees.
2 Corinthians 3:5 (King James Version)
5Not that we are sufficient of ourselves to think any thing as of ourselves; but our sufficiency is of God;
6Who also hath made us able ministers of the new testament; not of the letter, but of the spirit: FOR THE LETTER KILLETH, BUT THE SPIRIT GIVETH LIFE.