Sentence:  ... they had much profitable conversation, McCampbell quoting the doctrines of a rabbi called John Calvin, and our grandfather's grandfather replying with Talmud and Torah till McCampbell would almost weep that such a <WSD>honey-mouthed</WSD> scholar should be destined to eternal damnation. 
Meaning of the word marked with <WSD> tags:  ("in a positive sense") Having a sweet and smooth voice; eloquent.