Thanks to my friend Cameron who sent me these links, and who summed it up so well:
"Whether you are a democrat or not, it's great to hear the gospel
addressed in such a public forum and in such a beautiful way."
Addendum: After posting this and then reading some of the comments on the interview in Christianity Today, I started to think about my firm support of the separation of church and state. As much as I appreciate Miller's honest and real prayer, I wonder if the DNC had asked for prayers from any other representatives of the many different faiths free to practice and vote in America?
Here's the YouTube video, and an interview with Miller in Christianity Today.