Is that really the lot? I found dozens, so are you culling them somehow? I mean, are you eliminating all but those who represent religious or inspirational fiction exclusively? When I did that some time back, I think I came up with the same: about two dozen at best.
It's sad, but there really aren't that many agents out there who not only rep Christians, but who are Christians. You might go through the book again and just eliminate the ones who rep work you'd be embarrassed to be associated with. Although I'd prefer the former, I wouldn't object to an agent who also represented Historical fiction, etc. I only really object to those who claim to rep Christian/Inspirational, while also actively seeking manuscripts that sell well, such as erotica and such. It takes a lot of time to go through the guide and then all the websites of these agents, to eliminate those you wouldn't contact. I spent days making my list and finding those I judged to be the best "match" for what I write.
Most Christian agents say they make most of their deals at writer's conferences. There are only three or four really big conferences for Inspirational, but check the sites of the agents you are interested in, and find their schedules. Any conferences they'll be attending will be listed on their sites. I honestly think it's the best way to make contact.