This Thursday, millions of families will celebrate Thanksgiving with roasted turkey, buttery mashed potatoes, and (with only a slight amount of guilt) another piece of pumpkin pie. But in early America, days of Thanksgiving weren’t always about food.

Reflecting American religious practice, Presidents and Congresses from the beginning of the republic have from time to time designated days of fasting and thanksgiving (the Thanksgiving holiday we continue to celebrate on the third Thursday of November was established by Abraham Lincoln during the Civil War).

Following a resolution of Congress, President George Washington proclaimed Thursday the 26th of November 1789 a day of “public thanksgiving and prayer” devoted to “the service of that great and glorious Being who is the beneficent Author of all the good that was, that is, or that will be.” In setting aside a day for Thanksgiving, Washington established a non-sectarian tone for these devotions and stressed political, moral, and intellectual blessings that make self-government possible, in addition to personal and national repentance.

Although the First Amendment prevents Congress from establishing a religion or prohibiting its free exercise, Presidents, as well as Congress, have always recognized the American regard for sacred practices and beliefs. Thus, throughout American history, Presidents have offered non-sectarian prayers for the victory of the military and in the wake of catastrophes. Transcending passionate quarrels over the proper role of religion in politics, the Thanksgiving Proclamation reminds us how natural their relationship has been. While church and state are separate, religion and politics, in their American refinement, prop each other up.

Therefore this Thursday, in the words of Washington, let us:

[T]hen unite in most humbly offering our prayers and supplications to the great Lord and Ruler of Nations, and beseech Him to pardon our national and other transgressions; to enable us all, whether in public or private stations, to perform our several and relative duties properly and punctually; to render our National Government a blessing to all the people by constantly being a Government of wise, just, and constitutional laws, discreetly and faithfully executed and obeyed; to protect and guide all sovereigns and nations (especially such as have shown kindness to us), and to bless them with good governments, peace, and concord; to promote the knowledge and practice of true religion and virtue, and the increase of science among them and us; and, generally, to grant unto all mankind such a degree of temporal prosperity as He alone knows to be best.

Happy Thanksgiving!