Can you be a "TRUE" christian unless you are a true christian? Or were "they" never saved? the wheat and the tares? The people G-d will will say I never knew you? The Word says if you believe with all of your heart and confess with your mouth you are saved, you are saved.
The only way to reach God is through Christ, hence the term Christians.
My stance in this question is that we have to consciously work on keeping the flesh in check. We are in control of our decisions.
What I meant to say is that we need to react to God's calling to salvation and to follow his will. He does not force it on us.