You're welcome to believe whatever you want, but it is pretty impossible to say the bible is always consistent.
The Bible is consistent...in a number of ways.
Internally, it conveys a message all the way up until its climax (the Fall of Man, the climax being the second coming of Jesus to restore what Adam lost) and restoring God's rulership on Earth.
Secondly, many of the Bible writers were not contemporaries, had different personalities and backgrounds, but their writings built on each others rather well.
You mentioned Genesis -- well, it starts with the order of Creation, and then jumps onto a topical consideration. If you're looking for the Genesis account to go in order, then you'll be disappointed as the Bible isn't arranged Chronologically anyway. You'd have to study it to understand what happened when and why.
Lastly, the "contradictions". Sometimes, you have several people recording the same account and all the information isn't the same. Well, do four people who were eye-witnesses to the same car accident give you the exact same information?
Hardly! Some leave out certain details, others provide irrelevant details, and I've seen passages where writers share information based on their own knowledge.
Most of the "disharmony" can be easily resolved if people stop trying to get a "gotcha!" with the Bible, and research to see if an account simply lacks certain details that are shared in another account. I've done this, and I see no contradictions.
People scour the Bible, looking for contradictions, and as soon as they find even one, they claim the entire book is self-contradictory.
I don't have any interest in debating "contradictory" passages, just wanted to show why I have found it to be completely harmonious.
