I mean, it's wrong to read it just like if it were another book of history, novel or anything else?
Reverence is not required from those who do not believe.  You will not believe if you are not exposed to the Bible, or it's message in the first place.  Exposing yourself to it may result in belief, which might require reverence, but until then - reading the Bible will return to you only what you put into it.  There are some people who read the Bible looking for ways to cut it down - and they find those ways.  Reading it to enjoy the story-line is perfectly okay.
I don`t agree with John McArthur`s teaching but I also try not to call someone a heretic especially a sincere human being who is interested in God. Every study helps us to understand better the will of God. Maybe this quoting will help> "The law was never given as a means of salvation but it will always be the standard of Christian living" - Ellen White.\nIt is hard to understand were God works and were we have to do something...We confess our sins, God forgives us, we try not to sin but we are weak, God strengthens us....Maybe you should study more..because the problem is more complex.