[WhiteyAppleseed]

As historian David Barton explains, the Founders were all religious Christians, but they did not oppose pluralism, “as long as the beliefs of other religions did not threaten the stability of civil society.[44] In fact, the Founders believed that pluralism survived only within the concept of religious liberty espoused by American Christianity,”[45] uniquely different from European Christianity and based on what we now term the Judeo-Christian Ethic.[46]

Justice Sandra Day O'Connor said in a speech to a Philadelphia conference on religion in public life, in May of 1991: “Protecting religious freedoms may be more important in the late twentieth century than it was when the Bill of Rights was ratified. We live in a pluralistic society, with people of widely divergent religious backgrounds or with none at all. Government cannot endorse beliefs of one group without sending a clear message to non-adherents that they are outsiders.”

[WhiteyAppleseed]

The government, as defined in the First Amendment and explained by its author James Madison, must remain neutral between various sects of religion, but is not required to remain neutral between religion and irreligion.

No?

"The day that this country ceases to be free for irreligion, it will cease to be free for religion--except for the sect that can win political power." (Justice Robert H. Jackson, dissenting opinion, U. S. Supreme Court, Zorach v. Clausor, April 7, 1952. From Daniel B. Baker, ed., Political Quotations, Detroit: Gale Research, Inc., 1990, p. 190.)

"Jefferson wrote voluminously to prove that Christianity was not part of the law of the land and that religion or irreligion was purely a private matter, not cognizable by the state. "(Leonard W. Levy, Treason Against God: A History of the Offense of Blasphemy, New York: Schocken Books, 1981, p. 335.)