I won't reproduce the whole thing. Just the offending passage from Leaming's letter, June 9, 1789:
I am not able to see why there may not be a general union, although we did not agree in every little circumstance. I suppose you agree with, as in all Articles of Faith. Although you have cast out two of our creeds, I imagine you do not mean to deny the Divinity of our blessed Lord : for if we are ever justified, it must be by the merits of Christ, and no created being can do any thine by merit for another. All he can do is only to act up to the dignity of his nature; and God has a right to all this, because he gave all the ability.