I'll need to re-borrow said book from my local library however my notes indicate the following quotes from Ms. Goodwin's book:
"Lincoln’s inability to take refuge in the concept of a Christian heaven."
Regarding the deaths of those close to him she wrote that he: "confronted the loss of loved ones without prospect of finding them in the afterlife."
I'll get back to you with the appropriate page numbers as soon as I can.
Do you have anything on this?
I never recall Lincoln mocking Christianty, but instead quoted Scripture quite often.
His 'House Divided' speech is an example of Biblical usage.
[Lincoln said]"I said nothing to any one; but I made the promise to myself and (hesitating a little) to my Maker." While Lincoln rarely acknowledged the influence of faith or religious beliefs, "there were occasions when, uncertain how to proceed," remarked Gideon Welles, "he had in this way submitted the disposal of the subject to a Higher Power, and abided by what seemed the Supreme Will."
No mention at all of this book about atheism or ridicule of Christianity.