When the Republicans went to Washington about a decade ago, their mantra was "we're going to change Washington, not let Washington change us."

Nice idea, but it didn't exactly turn out that way.

David Kuo, former Special Assistant to President George W. Bush, noted that after two terms with a Republican administration, the climate was as acrimonious as ever.

The point? Big ideas and good intentions often come to naught.

"There's no big idea that's going to advance the kingdom, that's going to feed the kids in Africa. But it's not the big idea that's going to do it. It's going to take us," David said.

That holds true, whether in politics or in the church. So what can really make a difference?

"Transformed lives transform lives."

In his bestselling book, Tempting Faith, David suggested that maybe Christians needed to take a break from politics. Now he thinks he might have been wrong to suggest that.

"We need Christians in politics, but we need Christians willing to transform the way we do politics, ...