I just saw this article, which is a more thorough, and more eloquent, version of the point I've been making with regard to Christians and politics. It's nice to find someone else who agrees with you, and does an even better job explaining himself! The article is long, but I recommend the read - well worth it.
The main point the author makes is that we concerned Christians need to frame our arguments in terms that are accessible to non-Christian Americans. We're deeply concerned about things like abortion, and the breakdown of marriage & family. So we need to learn how to make the case that abortion & family breakdown are bad for our country, whether you're a Bible-believing Christian or not.
The way to do so is to utilize Moral Law - the innate sense all people have of right and wrong, which is accessible through reason. This is the tool C.S. Lewis used so effectively to impact the thinking of millions of secular people in Book 1 of his classic Mere Christianity. And as I wrote previously, it's the tool William Wilberforce used in his anti-slavery crusade, and it's the tool MLK used with such success during the Civil Rights era.
A sample from the article, which illustrates the difference between making a purely "religious" argument and making a more broadly accessible, moral argument:
"Rather than argue that abortion is contrary to God’s law and that we need to bring the Constitution into conformity with God’s law, social conservatives should argue that as a matter of scientific fact the child in a mother’s womb is a whole, living human being, and that as a matter of moral truth the direct killing of any peaceable human being is gravely unjust..."
"Nor should social conservatives be afraid to argue for maintaining marriage’s structure. If marriage isn’t the union of one man and one woman coming together as husband and wife to become father and mother to any children their marital love may bring, then social conservatives should demand that their opponents explain what marriage is. Is it simply the union of any consenting pair of sexually active adults? If so, then why only two? And why does it have to be exclusive and permanent—why not open or temporary “marriage”? Indeed, if marriage isn’t about a bodily union, then why limit it to sexual relationships at all? How about codependent relatives? How are marriage and children connected? Do children need mothers and fathers, or not? These debates can and, in fact, must be had at the level of reason."











