The principles of Christian religion : with a large body of divinity, methodically and familiarly handled by way of question and answer, for the use of families. Together with Immanuel, or the mystery of the incarnation of the son of God. By the most Reverend James Usher late arch-bishop of Armagh. The seventh edition corrected amd amended from many errors. To which is now added twenty sermons, preached at Oxford, before his Majesty, and elsewhere. Perused and published by his Lordship's chaplains. With the life of the author, containing many remarkable passages. And an alphabetical table, never before extant.