What's the worst thing you can think of to call a fellow Christian? What? You don't think Christians call each other names? Oh, we don't use curse words; instead we find Bible words to call one another. One I've heard a lot lately is "Pharisee." Often when I hear that word, it is aimed at a Christian who tries to obey God and thinks you should too.
Calling someone a Pharisee is a serious charge. After all, Jesus called them a brood of vipers and ascribed eight woes to them. Before we call someone this Biblical ugly word, we had better know what it means.