Atheists commemorated the 226th anniversary of ratification of the U.S. Constitution on Tuesday by purchasing ads in various newspapers, calling attention to what they call the "godless" nature of the nation's founding document.

Purchased by the Freedom From Religion Foundation (FFRF), a national non-profit dedicated to secular thought and the separation of church and state, one of the ads appeared in an Ohio newspaper on Tuesday, arguing that the Constitution is not as steeped in Christian tradition as some religious and political leaders now suggest.

The ad encourages readers to "celebrate our godless Constitution," noting that the document contains no reference to a deity, and that the Constitutional Convention featured no official prayer. It also uses quotes from the Founding Fathers to suggest that they were known to eschew traditional religious beliefs.

The ad, which appeared in the Lancaster Eagle Gazette (click the ad for a full-sized image):

Elsewhere in the country, some of FFRF's nearly 20,000 members fought back against a recent newspaper ad campaign by Hobby Lobby that sought to promote God's role in the nation's founding.

While Hobby Lobby ad, first published around July 4, put the phrase "In God we Trust" front and center, the Albuquerque FFRF chapter countered with, "In Reason we Trust."