Well, to that end, fundamentslists often use "bible believing" as though they were the only ones who did.
If you're a Christian, you're a Christian. It's not a matter of desgrees. If a person has a need to compartmentalize their religious affiliation by preceding it with words like "bible believing" or "saved", or "born again" or "spirit-filled", or whatever else, one can't help but question the necessity of doing so.
Interesting, since it's often the fundie crowd that questions peoples' salvation, and they're the ones using those labels the most. Of course being born again is scriptural! No one says otherwise. Using it in as a label which precedes the word "christian" is not biblically mandated, however.
Stop it. Stop it. Stop it. You know that you are just making too much sense.