book of the kings;" "the book of the kings of Israel." These last are probably only different titles of the same collection of annals, embracing in its contents the history of _both_ kingdoms; since the references to the book of the kings of Israel are for the affairs of the kingdom of Judah (2 Chron. 20:34; 33:18). 8. With regard to the above _original sources_, it should be carefully noticed that the references in the books of Kings are not to our present books of Chronicles, which did not exist when the books of Kings were written. Chap. 20, No. 21. Neither can the allusions in the books of Chronicles be restricted to our present books of Kings; for (1) they refer to matters not recorded in those books--for example, to the wars of Jotham, 2 Chron. 27:7; (2) they refer to the book of the kings of Judah and Israel for a _full_ account of the acts of a given monarch "first and last," while the history of the same monarch in our present books of Kings refers for _further_ information to the book of the Chronicles of the kings of Judah. It is plain that both writers had access to a _larger collection of original documents_, which were in great part the same. The chief difference in outward form is that, when the books of Chronicles were written, the annals of the two kingdoms of Judah and Israel seem to have constituted a single collection, whereas in the books of Kings they are always mentioned as two separate works. In making his selections from these annals, each writer proceeded independently. Hence the remarkable agreements, where both used the same materials; and the remarkable differences, where one employed documents, or parts of documents, which the other omitted to use.