Since you mentioned that you are a Christian a book we recently read through that helped my wife and I was this:
Some parts of it are written for newly weds, but even after 15 years of marriage it was all worth reading.
Beyond that I'd strongly recommend you two see a sex therapist if you can. Get a combination of individual and couples therapy from this person. The book is a good start. Amazon.com: Sheet Music: Uncovering the Secrets of Sexual Intimacy in Marriage (9782913356559): Kevin Leman: Books
Another good bit of advice is to make sure you two are talking each other's "love languages". That is each of you are doing the things that makes the other feel loved: The 5 Love Languages | The 5 Love LanguagesŪ
If you take a look over my story (in my footnote), I think you'll see there are a lot of similarities between our stories. We aren't out of the woods yet, but things are better and hopefully once we get to the bottom of how my wife's sexual abuse affected her things will be better still (and permanently so).