2 Samuel 17:25 in the King James Version
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.
Context
24 Then David came to Mahanaim. Absalom passed over the Jordan, he and all the men of Israel with him.
25 Absalom set Amasa over the army instead of Joab. Now Amasa was the son of a man whose name was Ithra the Israelite, who went in to Abigail the daughter of Nahash, sister to Zeruiah, Joab’s mother.
26 Israel and Absalom encamped in the land of Gilead.