The pretended difficulties in natural or reveal'd religion, no excuse for infidelity : Sixteen sermons preach'd in the Church of St. Mary-le-Bow, London, in the years 1721 and 1722, at the lecture founded by the Honourable Robert Boyle, Esq; the second edition. To which is subjoined, a defence of the Christian religion from the prophecies of the Old Testament. By Brampton Gurdon, A.M. archdeacon of Sudbury.