There is a little tool called the Johari Window which is used to "help people better understand their relationship with themselves and others." It looks like this:
While it often is thought about in terms of human relationships, I believe it is also helpful to think about it in terms of our relationships with the Bible. In the above window, if we replace "others" along the "y axis" with "Bible" we have a slight variation to consider.
If something is known to the Bible and self, then this is what is "open". It is things where the evolutionary process and the Bible overlap. For instance, prohibition of homicide is an area of overlap in both evolutionary and Biblical terms.
If something is known to the Bible and unknown to self, the this what is "blind". These are the things we might identify as the cultural context of the scripture writers. For instance, there are a number of cultural assumptions lost to time and translation when we read stories from the scripture.
If something is hidden to the Bible and known to the self, this is what is "hidden". The hidden things in this context might include what the Biblical writers were unaware of, like scientific advances and discoveries. Scripture writers never could have known about the forces of thermodynamics or the dinosaurs.
If something is hidden to the Bible and hidden to the self, this is what is "unknown". At least one thing in the "unknown" box would be the complete nature of God. Both scriptures and current humans cannot ever know the complete nature of God.
You know you have a healthy relationship with the Bible when you are always aware that the "unknown" box is much larger than most of us like to think that it is. Humility is important in interpersonal relationships. Humility is also important when in relationship with the Bible. If anyone teaches that the "unknown" is smaller compared to the other boxes (specifically the Open and Blind) chances are they are more blind than they think.