Zeruiah was David's sister and the mother of his three famous generals, Joab, Abishai, and Asahel.
Throughout the Bible, they are commonly referred to as the sons of Zeruiah.
1 Chr 2:13Jesse was the father of Eliab his firstborn, Abinadab the second, Shimea the third,1 Chr 2:14Nethanel the fourth, Raddai the fifth,1 Chr 2:15Ozem the sixth, David the seventh.1 Chr 2:16Their sisters were Zeruiah and Abigail. The sons of Zeruiah were Abishai, Joab, and Asahel, three.1 Chr 2:17Abigail bore Amasa, and the father of Amasa was Jether the Ishmaelite.