He didn't change the story, he just changed how it was told. Granted, thats a little odd to do that, but regardless he believed in Jesus, and so did the other signers, although I am sure you have explanations for each of them on how they were not "devout Christians." The country made a huge mistake with slavery, and made a lot of other huge mistakes, but I fail to see how you, or anyone else can say that this was not a Christian nation, one nation Under God, and yes, I know that was not added until Eisenhower's presidency, but that shows how long those principles carried on. They stayed until they took prayer out of schools, and the ten commandments from our courthouses (see Alabama Supreme Court). Whether we are or are not now, you can't say that we weren't.