A serious call to a devout & holy life [microform] : adapted to the state and condition of all orders of Christians / by William Law ; from the fifteenth London ed. ; to which is added, some account of the author, and three letters to a friend, not before published in any of his works ; also, two letters from clergymen in the established church, strongly recommending the serious call, and other works of the author ; his character, by Edward Gibbon, and a list of all his works