Wow, your comment makes NO sense! I wouldn't CALL someone a Christian, I would call them by their name. I would say that someone is a brother or sister in Christ to their face as an acknowledgement of us being adopted into the same family and having a "spiritual" connection as a term of endearment. How on earth can you be lying if you say, truthfully, that you ARE indeed a Christian, a child of God? That makes absolutely no sense! Besides, if you CALL yourself a Christian, and you're not, then you're a liar, and we know that, generally speaking, Christians don't dive into the sin of lying.