1) Biblical?
2) That would undoubtedly constitute the entire Body. Who believe on Him, continue in His word, know the truth, and are free.
Thing is.....even in that little article I could see that the attempt at exegesis was a train wreck. Seriously.
Every Christian who respects the rebirth, the mind of God within them, self-effort dies. This is why Jesus said his burden is light. It is us at rest while God within us moves.
We are not as silly Elvis impersonators, but we are Elvis himself, with God moving us.