IMO the Bible hasn't been altered so much as misinterpreted on some key points throughout the book. People have applied todays word definitions and our current knowledge of the world to a Book written long ago. And the Old Testament is where the problem starts...as one misinterpretation often leads to others. It is critical to understand the Old Testament so that the New Testament is made clearer. Ive seen pastors, when asked where to start studying the Bible, say John 3:16 or some other important passage. That never made sense to me. When I read a book, regardless of what book it is...I start at page 1. The beginning. To do otherwise omits the intent and meaning of the rest of the Book. My journey was very confusing at times because I had to unlearn some things. But it was always a reward when my efforts led to a better understanding. It has strengthened my Faith immeasurably. So all the effort I put in to my journey was worth it.