YVRguy saidI think if the framers of the Constitution intended for people to have freedom from religion they would have said so. Leave it to the lawyers to spend the last 150 years tweaking the wording to suit whatever interest is paying them.
Regardless, the writing is on the wall. The US will become increasingly multi-cultural and inevitably the Supreme Court will rule that all governments must act as atheistic as possible, with zero tolerance for any reference to God on any government logo, document, procedure etc.
That's only fair. The only way we, through government of/by/for the People, can be all inclusive is to not recognize any religion. If we allow religious symbols, expressions, texts, etc. into the public square, then we have to include all of them, which is totally impractical.
Consider the fluid nature of belief. In 1776, the most popular religions were Anglican, Presbyterian, and Congregationalist, but the non-religious were the majority. Today, it's Catholic, Baptist, and Methodist. All Protestants outnumber the Catholics, and secular/non-religious is second only to Christianity.
Religion then is a personal belief which is subject to change. That is why I believe the Declaration of Independence contains the rather cryptic expressions, "Nature's God", and "their Creator", rather than "God". IMO "Endowed by their Creator with certain unalienable Rights" means simply "We have these rights because we exist." Were our government to get involved in the religion business, that would chip away at the personal nature of religion.