Matthew Henry on 1 Chronicles 8:1-32
There is little or nothing of history in all these verses; we have not therefore much to observe. 1. As to the difficulties that occur in this and the foregoing genealogies we need not perplex ourselves. I presume Ezra took them as he found them in the books of the kings of Israel and Judah (Ezr 9:1), according as they were given in by the several tribes, each observing what method they thought fit. Hence some ascend, others desecnd; some have numbers affixed, others places; some have historical remarks intermixed, others have not; some are shorter, others longer; some agree with other records, others differ; some, it is likely, were torn, erased, and blotted, others more legible. Those of D…
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Now Benjamin begat, etc. - See what has been said on the preceding chapter, Ch1 7:6 (note).
John Gill on 1 Chronicles 8:4
And Abishua, and Naaman, and Ahoah, and Gera, and Shephuphan, and Huram. These were all the sons of Bela; one of the name of Naaman is reckoned among the sons of Benjamin, Genesis 46:21 and from this grandson the family of the Naamanites are named, Numbers 26:40, and Ahoah is by some thought to be the same with Ehi, mentioned in Genesis 46:21 as one of Benjamin's sons. Some take the three last to be the sons of Ehud, spoken of in the next verse; but Shephuphan and Huram seem to be the same with Shupham and Hupham, Numbers 26:39.
Keil & Delitzsch on 1 Chronicles 8:4-5
And Naaman, and Ahiah, and Gera,.... Or, to wit, Naaman, &c. so the words are to be connected with
these are the sons or Ehud, in the preceding verse:
he removed them; to the above place, that is, either Gera, or rather Ehud, he advised them, directed and enjoined them to go thither, as being most convenient for them:
and he begat Uzza and Ahihud; after he had removed his other sons.
Tyndale Open Study Notes on 1 Chronicles 8:3