2 Samuel 17:25 And Absalom made Amasa captain of the host instead of Joab: which Amasa was a man’s son, whose name was Ithra an Israelite, that went in to Abigail the daughter of Nahash, sister to Zeruiah Joab’s mother. MC VC

1 Chronicles 2:16 Whose sisters were Zeruiah, and Abigail. And the sons of Zeruiah; Abishai, and Joab, and Asahel, three. MC VC

1 Chronicles 2:17 And Abigail bare Amasa: and the father of Amasa was Jether the Ishmeelite. MC VC