Here are some George Washington quotes. I think the praying general thing is propaganda, personally. Imagine that, propaganda in America.
"If I could conceive that the general government might ever be so administered as to render the liberty of conscience insecure, I beg you will be
persuaded, that no one would be more zealous than myself to establish effectual barriers against the horrors of spiritual tyranny, and every species
of religious persecution."
-- George Washington, letter to the United Baptist Chamber of Virginia, May 1789, in Anson Phelps Stokes, Church and State in the United States, Vol
1. p. 495, quoted from Albert J Menendez and Edd Doerr, The Great Quotations on Religious Freedom
"We have abundant reason to rejoice that in this Land the light of truth and reason has triumphed over the power of bigotry and superstition ... In
this enlightened Age and in this Land of equal liberty it is our boast, that a man's religious tenets will not forfeit the protection of the Laws,
nor deprive him of the right of attaining and holding the highest Offices that are known in the United States."
-- George Washington, letter to the members of the New Church in Baltimore, January 27, 1793, in Anson Phelps Stokes, Church and State in the United
States, Vol 1. p. 497, quoted from Albert J Menendez and Edd Doerr, The Great Quotations on Religious Freedom
Here's one from Jefferson about Washington:
"Dr. Rush told me (he had it from Asa Green) that when the clergy addressed General Washington, on his departure from the government, it was observed
in their consultation that he had never, on any occasion, said a word to the public which showed a belief in the Christian religion, and they thought
they should so pen their address as to force him at length to disclose publicly whether he was a Christian or not. However, he observed, the old fox
was too cunning for them. He answered every article of their address particularly, except that, which he passed over without notice."
-- Thomas Jefferson, quoted from Jefferson's Works, Vol. iv., p. 572. (Asa Green "was probably the Reverend Ashbel Green, who was chaplain to
congress during Washington's administration." -- Farrell Till in "The Christian Nation Myth.")
There's more here,
if you wish to read more.