I don't believe there's any status that would prevent someone from being a philosopher. Any person of any race, sex, socio-economic status, sexuality, culture, or religion can study philosophy. There's no restrictions. Religion in itself is somewhat of a philosophy. Each separate religion has their own rules and guidelines that make up a person or society's belief system; it's all a philosophy. Any person can learn how to argue, question, or to think logically, to reason and think through other people's opinion's and ideas, Christian or not. I honestly can't think of an argument that could be made that would deem all philosophers incapable of being Christians -- it just doesn't make sense.
Philosophers can absolutely be Christians. Philosophy is, quite simply, a way of looking at the world. Philosophy examines abstract ideas in view of the world. While religion is certainly part and parcel of the broad examination, a philosopher is certainly not precluded from any religion nor required to be enjoined by it. Some questions that philosophy raises are whether or not God exists, whether or not man has free will, and what is evil, just to name a few. The answers that a philosopher finds to these questions can vary wildly, and is certainly not limited to nor excluded from Christianity.
Anyone has the ability of being Christian. All it takes is believing in God and worshiping him as such. A philosopher can still do their philosophy and still be Christian, there is no reason why they would not be able too. Being Christian is decided by you beliefs and actions, not study choices and career choices.
Yes, of course philosophers can be Christians. Just read any of Soren Kierkegaard's texts. He was totally a Christian existentialist. Christian existentialism rejects the notion of absolutely freedom; that rather our own will guiding our lives, it is God who determines our fates and our destiny. So absolutely, yes, philosophers can be Christians.
To be a christian, you must believe in god, as revealed according to the bible.
No other definition will do, a believer in a different god, or who does not believe in the bible as the word of god, is not a christian.
Going back to the Greek root words, a philosopher is a lover of wisdom.
It is difficult, I would argue impossible, to love wisdom and be a christian.
The bible repeatedly contradicts itself, and demands fairly brutal, uncivilized behaviour from adherents. The message of the bible is also that a person must follow god in order to be resurrected, and if he does not, he will be burned and tortured forever.
This is no different than someone who threatens to kill you if you do not give into their demands.
A man who would follow a person that contradicts themselves furiously and demands total obedience to their set of arbitrary rules (under pain of torture) would be said to have left the path of wisdom. In the same way, a man who is a christian cannot claim to be a lover of wisdom.