2 Samuel 17:25, NLT

25Absalom had appointed Amasa as commander of his army, replacing Joab, who had been commander under David. (Amasa was Joab’s cousin. His father was Jether,*17:25a Hebrew Ithra, a variant spelling of Jether. an Ishmaelite.*17:25b As in some Greek manuscripts (see also 1 Chr 2:17); Hebrew reads an Israelite. His mother, Abigail daughter of Nahash, was the sister of Joab’s mother, Zeruiah.)