There is much confusion about the role of the church in addressing social issues. Here are several good resources that explain the biblical basis for cultural engagement along with practical ways to address social issues in the church.
The Absurd Idea of the Pro-Life Church ~ Michael C Sherrard
Why The Pulpit Must Be Political ~Michael C. Sherrard
The Pro-Life Pastor: His Job Description and Your Responsibility ~ Scott Klusendorf
When A Pro-Life Pastor Votes Pro-Choice ~Scott Klusendorf
Dead Silence: Must the Bible Say Abortion is Wrong Before We Can Know That it’s Wrong? ~Scott Klusendorf (Christian Research Journal, vol. 27, no. 1, 2004)