Natural religion insufficient, and revealed necessary, to man's happiness in his present state : or, A rational enquiry into the principles of the modern deists; wherein is largely discovered their utter insufficency to answer the great ends of religion, and the weakness of their pleadings for the sufficiency of nature's light to eternal happiness: and particularly the writings of the late learned Lord Herbert, the great patron of deism, to wit, his books De veritate, de Religione gentilium, and Religio laici, in so far as they assert nature's light able to conduct us to future blessedness, are considered, and fully answered. To which is added, an essay on the true ground of faith. By the late Reverend Mr. Thomas Halyburton, professor of divinity in the University of St. Andrews. [Six lines of quotations].