Two discourses : the first, Of preaching Christ; the second, Of particular and experimental preaching. / By the late Reverend Mr. John Jennings. ; With a preface by the Reverend Dr. Isaac Watts. ; To which is added, a letter concerning the most useful way of preaching; written in the German language by the late Reverend and celebrated Dr Augustus Hermannus Franck, professor of divinity in the University of Hall in Saxony, Pastor of a church, and director of the charitable foundations there. ; Translated into Latin by order of his son, the present professor Franck, and out of the Latin into English by David Jennings.