So why don't you describe what the mind-set of a "believer" is then, what his/her belief is regarding God, so that others can know what you mean.
Or is thus just a fluid quantity to you?
You want me to do what the Bible fails to do?
The writers of the NT seemed to be ok with merely using the word, without going into all kinds of verbal gymnastics to 'describe' exactly what they are talking about.