When I got into politics professionally more than 20 years ago, I learned one thing pretty quickly. The worst people in the business to trust were the ones who talked a lot about being Christians and talked about being on a mission from God to change the world by getting elected.
Those were the people most likely to try to cheat me. They were the ones most likely to cut corners and justify their “little” dishonesties with the justification that they were trying to do God’s will. As a Christian, that sickened me. I learned that I could trust most of the rest of the folks in the business. If they had been around for awhile — even if you knew they were liars and thieves — you knew there was an “honor among thieves” that you could mostly count on.
Politicians such as Rick Santorum scare me. It’s partly because of his cavalier willingness to use government force to impose his judgment on other people while spouting rhetoric about liberty. But even more than that, it scares me that he seems to believe he’s on a mission from God.
In a speech four years ago at a Catholic university in Florida, Santorum laid out his view of the world. In his version, the United States is on God’s side. The parts of the world that oppose this country are evil. He seems to have missed the point that when God sees a sinful and fallen world, that includes us, too. Instead, he sees a holy and righteous United States — led by the U.S. government, of course — on God’s side. He said:

Life is full of choices, but some require us to ‘come before winter’
Double standards seem like the only standards most politicians know
Sorry, Newt: It’s not ‘isolationism’ to oppose invading other countries
We all love stories, but principles should trump anecdotes in debate
To think clearly, turn off the tube: Your television is not your friend
Creator knew truth when He said 
A year later, my father’s death looms large, but I have no regrets
Irrational beliefs hurt all of us when you hand power to the ignorant
English teacher tells Wellesley grads: ‘You’re nothing special’ — not yet