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Sisters - that is, half-sisters. Abigail and Zeruiah were not daughters of Jesse, but of a certain Nahash, whose widow Jesse married ([Refer…

The Hezronites, who were sons of Pharez (1 Chronicles 2:5), and their three lines of descent: Jerahmeel, Ram, and Chelubai.

Whose sisters were Zeruiah and Abigail .
&c.] That is, sisters of David:
and the sons of Zeruiah;…

We have now come to the register of the children of Israel, that distinguished people, who were to dwell alone, and not be reckoned among the natio…
Albert Barnes
AlbertBarnes