Understanding of the bible is way beyond human thinking.
One of the things we should note is that the Bible is not a literature work or a book review, where it's interpretation and meaning is clear.
The bible is Jesus himself, the bible says " I am the bread of life" the bread here refers to the word. So Jesus is the word of God.
In that case the bible can't be understood by mere glance.
Inorder for you to have a clear understanding of what the bible really entails, you must seek for the leading of the holy spirit.
The truth is, we can't get use to the bible, the word of God appears to be new each day, in this case, you can't you can't have a clear understanding of everything until you give yourself out to the leading of the spirit.
But it is unfortunate that some persons read the bible just to fulfill all righteous, this act will produce zero results. But a deeper leading of the spirit will lead to reveal of the secret things we know not.