Go to Gary North's web site to read excellent books on the Bible and Christian thought. Not only are the books interesting, challenging, and timely, they really are free.
The Blessed Economist runs a great blog that addresses economics and political philosophy in a biblical sense. Though I'm not saying I agree with everything posted, it is all very thought provoking.
Steve Scott has an interesting blog, From the Pew. Like the Blessed Economist, Scott offers insight into economics and liberty, all from a biblical perspective. Once again, I'm not saying I agree with everything posted. But, good reading nonetheless.