Many, many people who claim to be Christians have no idea of what the Bible really teaches on this subject, so for many it will challenge their claim. It will test their faith which is always a good thing for a professing Christian to do. How should we define what a Christian is and what a Christian is not? The true answers to these questions cannot come from any of us, no matter what we claim and no matter how we choose to live. They must come from the Bible.