The Christian who drinks cannot win his drinking companions to Christ. The girl who dances will never win her dancing boyfriend! You may think to gain favor and influence with the unsaved by joining with them in the lodge, or attending with them the movies, or by smoking or drinking or playing bridge with them, but you cannot! Worldliness means powerlessness! And that means that every Christian who sells out is guilty of the murder of the poor lost souls that go to Hell because he lost his influence.
A Christian might drink only ginger ale at the tavern bar, but there he is already on the way to drinking beer and whiskey. The girl who attends a ball but never dances a step, will soon surrender her body to the lustful embrace of every casual male acquaintance as other dancers do.
It is far best for the Christian never to see some things, so he will never want them. The old-fashioned Christian who will not have playing cards in his house will never learn to gamble with them. One who never sees, in movies and night clubs or elsewhere, half-clothed girls, drinking, smoking, gambling, petting, making love to many men, is likely to miss being led into that kind of life by these sirens of sin. It is the Devil's game to make people think it necessary for people to "know the ways of the world.