Alan of Thinklings:
Conservatism aims first at preserving institutions and virtues that are gifts from God. We and our families, our work and our wealth, our bodies and our minds, our homes and our cities-- they are all gifts from God. We hold them in trust, as good servants, to give account at the last judgment for what we have done with our gifts. Have we squandered them? Or have we kept and preserved them, using them to the glory of God and handing them over to the next generation to further Christ's kingdom?
So conservatism does have a positive agenda: to hold and invest God's gifts, and pass them along as an inheritance. Its battle is not to create something out of nothing (which is why it seems so out of place next to programs which would radically re-create society, such as Marxism), but rather to tend a garden that another has planted.
I'm skeptical of this response, or any that tries to pin a modern political ideology on the Gospel. And let's not forget that conservative notions like limited government, personal and economic freedom, and republican (lower-case 'r') government are predicated more on humanism than on any Biblical worldview.
Hat tip: Jeff the Baptist