A bible verse : "For instance, pagans who never heard of the Law but are led by reason to do what the Law comands, may not actually "posses" the Law, but they can be said to "be" the Law.
Again , this is talking about the Children of God, not everyone else.
"Ye are the salt of the earth"
I wonder what God means when He is saying , the Christians loses its savour. Christians good for nothing? Can Christians lose their faith?