It's a variation – or misquotation – from a masonic ceremony. As for its uniqueness, I've no idea. https://www.google.com/books/edition/The_Text_Book_of_Freemas

It's a variation – or misquotation – from a masonic ceremony. As for its uniqueness, I've no idea. https://www.google.com/books/edition/The_Text_Book_of_Freemasonry_A_Complete/rptEBn_HnhoC?hl=en&gbpv=1&bsq=%22the%20grand%20leveller%22 https://www.google.com/books/edition/The_Text_Book_of_Freema...