The word "God" is not in the constitution. It's also not in the Bill of Rights.
But it *is* in the Declaration of Independence, which is what J.Creasy said (above).
It's right at the beginning. Not that it matters of course, because Article I of the Bill of Rights says what matters.
Intro to the Bil of Rights:
Quote:The unanimous Declaration of the thirteen united States of America,
When in the Course of human events, it becomes necessary for one people to dissolve the political bands which have connected them with another, and to assume among the powers of the earth, the separate and equal station to which the Laws of Nature and of Nature's God entitle them, a decent respect to the opinions of mankind requires that they should declare the causes which impel them to the separation.
Interesting that they chose the phrase "Laws of Nature and Nature's God".