The real nature of the church or Kingdom of Christ : A sermon preach'd at the church of S. Martin in the fields, May 19. And at that of St. Olave Old-Jewry, and St. Martin Ironmonger-Lane, June 2. 1717. In answer to the Bishop of Bangor's sermon upon the same text. With a postscript, in answer to his lordship's letter to Dr. Snape; so far as it affects the said sermon. By Joseph Trapp, M.A. lecturer of those Parishes.