Repost from another site, I did not write this, nor do I take any credit for it, but it is historically accurate, enjoy.
"You often hear many on the right claim that our country was founded on Christianity. They’ll use our Pledge of Allegiance as “proof” that this nation was founded as a Christian nation. Many of them put bumper stickers on their vehicles that say “One Nation Under GOD!” or emphasize the word “God” when they recite our nation’s pledge.
It all sounds great, except—our pledge wasn’t written until until 1892. Yes, you read that correctly, our Pledge of Allegiance was written a full 116 years after the Revolutionary War and Declaration of Independence.
Not just that, the phrase “Under God” wasn’t even in the original text of our pledge:
“I pledge allegiance to my Flag and the Republic for which it stands, one nation, indivisible, with liberty and justice for all.”
And it gets better. The author of our pledge was Francis Bellamy—a Christian socialist. He stood for workers rights and believed in an equal distribution of economic resources. He believed in the nationalization of certain industries, because he feared their manipulation and corruption in the hands of a private sector which would put profits before people.
So a Christian, a minister at that, wrote the pledge—yet didn’t include the word “God” or “Christian” and he was a socialist. I’m sure by now most conservatives reading this will have already decided I’m making all of this up. But oh, there’s more.
In 1923, more text was added to our pledge:
“I pledge allegiance to the Flag of the United States of America and to the Republic for which it stands, one nation, indivisible, with liberty and justice for all.”
So, 31 years after its origination, our pledge still didn’t contain the phrase “under God.”
In fact, it wasn’t until 1954 that the phrase “under God” was actually added to our pledge, in a response to the threat of communism."