The following is from a message by Charles Spurgeon entitled, "The Soul Winner".
That ye may be blameless and harmless, the sons of God, without rebuke, in the midst of a crooked and perverse nation, among whom ye shine as lights in the world; . . . . Philippians 2:15
I believe that one reason why the church at this present moment has so little influence over the world, is because the world has so much influence over the church! Nowadays, we hear professors pleading that they may do this, and do that--that they may live like worldlings. My sad answer to them, when they crave this liberty is, "Do it if you dare. It may not cost you much hurt, for you are so bad already. Your cravings show how rotten your hearts are. If you are hungering after such dogs food--go dogs, and eat the garbage!
Worldly amusements are fit food for pretenders and hypocrites. If you were God's children, you would loathe the thought of the world's evil joys. Your question would not be, "How far may we be like the world?" but your cry would be, "How can we get away from the world? How can we come out of it?"
Finally, brethren, whatsoever things are true, whatsoever things are honest, whatsoever things are just, whatsoever things are pure, whatsoever things are lovely, whatsoever things are of good report; if there be any virtue, and if there be any praise, think on these things. - Philippians 4:8