The following message from Dr R.C. Sproul explains if there is a carnal Christian or not.
Faith without works is dead. Living faith or dead works.
Justification is by faith alone, but not by a faith that is alone.
Saving faith if it is true faith not only inevitably bear fruit of faith and righteousness, necessarily and immediately. Anybody who is saved is a changed person – faith is the fruit of regeneration. Person who has saving faith, is given indwelling presence of the Holy Spirit. We have faith in the works of Christ which justifies with fruit of works.
Check yourself please – faith is never alone – it bears fruit.