Some particular instructions concerning the Christian covenant, and the mysteries by which it is transacted and maintained : Collected from the Sacred Scriptures, and earliest writers of the Christian Church; and from approved divines of the Church of England. Together with a question, concerning such as have communicated in the eucharist without being previously confirmed by the bishop, fully answered upon the principles of the primitive Catholick Church; in a letter to a friend. and an essay on the nature of man, as he is a creature endowed with reason, and thereby capable of religion.