What is the difference between the culture of a particular church and a church that reflects the culture in which it lives?

A church might have the following as a value statement – “We are committed to reach all people with the Gospel.” However, when one looks at the demographics of the church compared to the demographics of their community, the numbers are dissimilar.

Questions
What is the difference between the culture of a particular church and a church that reflects the culture in which it lives?
Does a church need to change its culture to reach the lost?
What, if any, are the theological implications of making that change?
Instructions
Initial post due by Wednesday of Week Seven. Write a 300-word post discussing the above questions. Be sure to include information from texts and cite appropriately.