I Chronicles 9:24

For these Levites, the four chief porters, were in their set office,.... The four chief porters who were over all the two hundred and twelve, and had one over them, Ch1 9:17, these were never changed, nor went into the country villages; but were always upon the spot, and in their office, superintending the rest: and were over the chambers and treasuries of the house of God; see Ch1 26:20.

This chapter intimates to us that one end of recording all these genealogies was to direct the Jews, now that they had returned out of captivity, with whom to incorporate and where to reside; for here we have an account of those who first took possession of Jerusalem after their return from Babylon, and began the rebuilding of it upon the old foundation. I. The Israelites (Ch1 9:2-9). II. The priests (Ch1 9:10-13). III. The Levites and other Nethinim (Ch1 9:14-26). IV. Here is the particular charge of some of the priests and Levites (Ch1 9:27-34). V. A repetition of the genealogy of king Saul (Ch1 9:35-44).