First Book of Chronicles

The First Book of Chronicles or First Chronicles is the thirteenth book of the Old Testament and thus the Bible. The First Book of Chronicles begins with a detailed documentation of ancestry of biblical persons, leading up to David. From there First Chronicles describes the accounts of David. In First Chronicles a different perspective, as well as several details not mentioned in 2nd Samuel and first kings are written, connecting the three sets of books.

Author
While certainty about its authorship is not truly known, it is possibly Ezra. This is reasonable, because in his book Ezra has meticulous records concerning governmental officials and genealogy, much like First Chronicles. In addition the Book of Ezra contains historical accounts, that the records support. There is also much focus on the Temple in both books; in First Chronicles the preparation, fundraising and early planning of the Temple, while in Ezra its reconstruction.

It is feasible that Ezra wrote First Chronicles, because it was written after the exile. Regardless the whoever the author was, it would have been written after the exile.

First Chronicles originally was written into one book merged with Second Chronicles.

Purpose
Yet, despite First Chronicles borrowing information from Second Samuel, it has a separate reason for being written. Second Samuel was written as a primary/secondary account about the reign of David, while Chronicles was written as tertiary/repetitive account of David's reign to remind Israel of its era of power.

First Chronicles contains many records and genealogy while Second Chronicles does not. The goal of these records was to trace lineage of post-exile Jews to their Israelite ancestry, reminding them of being God's chosen people and the authenticity of their ancestor's work. First Chronicles also shows the power of the Nation of Israel, under the reign of King David, both through the historical accounts and the records; the records show the power of the government, the Office of King, the Levitical Priesthood and the military all through listing the roles and amounts of the workers.

First Chronicles also gives the early plans and thoughts about the Temple. In its records it mentions officials who worked in the Temple, giving reminder that Solomon had constructed it. It also mentions in the context of David's triumph over other nations that Solomon had used bronze, David had raided in building the Sea of Bronze. Furthermore the Davidic covenant recorded in the book (copied from Second Samuel) is an early example of the desire to build the Temple, but David is told that his son would build it instead. Furthermore Chronicles records David's military census, which lead to David building an altar where the Temple would one day be built.

First Chronicles also has an original copy of the account in the twenty-second chapter, which details the early fundraising and acquisition of materials by David for his son to build. The actual construction of the Temple would be detailed in both Second Kings and in Second Chronicles, which is the sequel to First Chronicles. If indeed Ezra wrote the book, then the Book of Ezra would serve as the third book in the "trilogy" on the history of the Temple.

Genealogy
First Chronicles has as an extensive amount of genealogy, tracking various family records. The genealogy starts with summaries of early ancestry such as Adam, Noah, Abraham and Jacob, but mainly focuses on that of the Israelite tribes. Specific genealogy traces from Judah to David and his family line.