freebubbles,
You are absolutely correct that just because some say they are Christian does not make it so. People sometimes lie. Or are deceived. But our words do matter. Jesus said that those who profess His name before men, He would profess before His Father in heaven. So, it is important that we speak up about Christ. Of course, like you said we must LIVE up to that profession of faith or we are hypocrites. And you already know what Jesus said about hypocrites.