Selfish Christians

Is there such a thing as a Selfish Christian? Isn’t that an example of an oxymoron?  I think it is.  You see, to me a Christian is one who not only follows Christ but also his teachings.  A Christian is then supposed to share their faith with others so they can also become a part of God’s family.  So in reality, we cannot be selfish and call ourselves Christians.  Right? For my blog’s sake, we’ll pretend it’s an acceptable term.