The truth will set you free, or will it destroy you?

Christianity promises that the truth will set you free, of course claiming that Christianity is the truth. Can atheists claim the same thing? Isn't it at least possible that, even on the assumption that atheism is true, the truth of atheism could destroy a person, or every person? I can easily imagine thinking both that atheism is true, and that I hope most people don't find out that it is.