Dan Barker should know
Dan Barker was an evangelical preacher and gospel song writer until he realized it was all superstition. Now he is co-President of the Freedom From Religion Foundation, the largest freethought association in North America.
With more than 22,500 members, the nonprofit FFRF works as an effective state/church watchdog and voice for freethought (atheism, agnosticism, skepticism).
You can read Dan Barker’s story in his new book, Godless: How an Evangelical Preacher Became One of America’s Leading Atheists.