The books of Chronicles were originally one book, as in the case of Samuel and Kings. The Hebrew title is translated the "words of the days", yet the word Chronicles is mainly adopted by a theologian named Jerome who thought that they ought to bear the title from the Greek word for time which is "Chronos". This title created a distraction from the true meaning and purpose of this wonderful book. The main purpose of Chronicles was to form a genealogical description of the 12 tribes of Israel from the earliest recorded time. This was very important considering that there was a mixed multitude that had returned from Babylon, and it was also important to determine the lineage of Judah, and to reestablish the functions and order in which each individual tribe was required to perform.The author of Chronicles has a fervent desire to make the people of Israel aware of the true glory of their kingdom, realizing that it traces back to David and Solomon. There is nothing that would impress upon them a greater understanding than taking them back through a detailed history of their kingdom, with all of its glory and prosperity and also the horrible sin that led to the captivity and the downfall of the theocracy. The author of Chronicles had a constant focus on the Temple which had been destroyed and the dynasty of King David. There is hardly any mention of the northern kingdom of Israel, it is mainly concerned with Judah and the events in connection with King David, and the building of the Temple. Solomon is not necessarily a huge focus other than his preparations for building the Temple and its dedication. The worship of the Temple is paramount and the functions of the Levites as well. The Kings of Judah are stressed with great importance as well as the idolatry that seduced the people of God.Hebrew tradition credits Ezra has the author of the books of Chronicles, in the beginning of the books trace the genealogical records all the way back to Adam which took place in approximately 4004 BC. The book concludes with the Jews in Babylon after the captivity.