(Only first 2 paragraphs, read entirely link below)
Sir,
You will, I hope, not think it a Presumption in a Stranger, whose Name, perhaps never reached your Ears, to address himself to you the Commanding General of a great Nation. I am a German, born and liberally
educated in the City of Heydelberg in the Palatinate of the Rhine. I came to this Country in 1776, and felt soon after my Arrival a close Attachment to the Liberty for which these confederated States then struggled. The
same Attachment still remains not glowing, but burning in my Breast. At the same Time that I am exulting in the Measures adopted by our Government, I feel myself elevated in the Idea of my adopted Country. I am
attached both from the Bent of Education and mature Enquiry and Search to the simple Doctrines of Christianity, which I have the Honor to teach in Public; and I do heartily despise all the Cavils of Infidelity. Our present
Time, pregnant with the most shocking Evils and Calamities, threatens Ruin to our Liberty and Goverment. Secret, the most secret Plans are in Agitation: Plans, calculated to ensnare the Unwary, to attract the Gay and
irreligious, and to entice even the Well-disposed to combine in the general Machine for overturning all Government and all Religion.
It was some Time since that a Book fell into my Hands entituled “Proofs of a Conspiracy &c. by John Robison,”1 which gives a full Account of a Society of Freemasons, that distinguishes itself by the Name “of Illuminati,”
whose Plan is to overturn all Government and all Religion, even natural; and who endeavour to eradicate every Idea of a Supreme Being, and distinguish Man from Beast by his Shape only. A Thought suggested itself
to me, that some of the Lodges in the United States might have caught the Infection, and might cooperate with the Illuminati or the Jacobine Club in France. Fauchet is mentioned by Robison as a zealous Member: and
who can doubt of Genet and Adet? Have not these their Confidants in this Country? They use the same Expressions and are generally Men of no Religion. Upon serious Reflection I was led to think that it might be
within your Power to prevent the horrid Plan from corrupting the Brethren of the English Lodge over which you preside.2
https://founders.archives.gov/documents/Washington/06-02-02-0435