FOREWORD One of the praise songs we sing at our student conferences talks about not being "casual Christians." But believe me, they're everywhere. Casual Christians play the game . . . and many of them play it well. Church is where they go to be seen, not to worship the Lord Jesus Christ. Youth groups are where they go to check out the babes and hunks, not where they go to learn what the Word of God says. But I don't want to come across as such a...