A person can know the Christian philosophy, practice the Christian philosophy, live according to the Christian philosophy without ever knowing it was called that. They can even believe THE Christian philosophy, which would have been much better stated as what is the starting point of Christian philosophy, and not know to call it by that name or that anyone ever had philosophized the Christian Faith. In fact, if they do not, they likely are not Christian. To philosophize within the Christian faith is one thing, to arrive at it the Christian faith through philosophy is another.
It is a bit disingenuous to ask what THE Christian philosophy is, and then criticize all replies for not being the one above, as if there is only one valid answer. And the one that is given is just as "flawed" and in the same way, as some to the others were said to be. Many religions would claim the same thing, and claim that they do have faith in God and trust what he has promised is true. Certainly the Jewish religion did.