So all Israel were reckoned by genealogies; and, behold, they were written in the book of the kings of Israel and Judah, who were {a} carried away to Babylon for their transgression.

(a) Until now he has described their genealogies before they went into captivity, and now he describes their history after their return.

Wesley's Notes

9:1 The book - In the publick records, wherein there was an account of that kingdom, and of the several families in it.

Jamieson-Fausset-Brown Bible Commentary

CHAPTER 9

1Ch 9:1-26. Original Registers of Israel and Judah's Genealogies.

1. all Israel were reckoned by genealogies-From the beginning of the Hebrew nation, public records were kept, containing a registration of the name of every individual, as well as the tribe and family to which he belonged. "The book of the kings of Israel and Judah" does not refer to the two canonical books that are known in Scripture by that name, but to authenticated copies of those registers, placed under the official care of the sovereigns; and as a great number of the Israelites (1Ch 9:3) took refuge in Judah during the invasion of Shalmaneser, they carried the public records along with them. The genealogies given in the preceding chapters were drawn from the public records in the archives both of Israel and Judah; and those given in this chapter relate to the period subsequent to the restoration; whence it appears (compare 1Ch 3:17-24) that the genealogical registers were kept during the captivity in Babylon. These genealogical tables, then, are of the highest authority for truth and correctness, the earlier portion being extracted from the authenticated records of the nation; and as to those which belong to the time of the captivity, they were drawn up by a contemporary writer, who, besides enjoying the best sources of information, and being of the strictest integrity, was guided and preserved from all error by divine inspiration.

Matthew Henry's Concise Commentary

9:1-44 Genealogies. - This chapter expresses that one end of recording all these genealogies was, to direct the Jews, when they returned out of captivity, with whom to unite, and where to reside. Here is an account of the good state into which the affairs of religion were put, on the return from Babylon. Every one knew his charge. Work is likely to be done well when every one knows the duty of his place, and makes a business of it. God is the God of order. Thus was the temple a figure of the heavenly one, where they rest not day nor night from praising God, Re 4:8. Blessed be His name, believers there shall, not in turn, but all together, without interruption, praise him night and day: may the Lord make each of us fit for the inheritance of the saints in light.