If only we would recognise that Christianity is indeed an entire worldview and not just a spiritual religion for Sunday. If enough Christians really applied the sufficiency of Scripture to all of life, our culture would be very different.
Even the Muslims know the Biblical principle of not charging interest on bank loans to their own (only to strangers, i.e., outside the household of faith—see Deut. 23:20, Luke 19:23). Imagine if enough Christians pooled their resources to do this instead of our having to cast our lot with unbelievers to secure finance.
Stephen, J. (2011) The Sufficiency of Scripture: The Key to Revival. Pleasant Word. p. 20