4 Then said the king to Amasa, Assemble to me the men of Judah within three days, and be thou here present.
2 Samuel 20:4 Cross References - Webster
2 Samuel 17:25
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.
2 Samuel 19:13
13 And say ye to Amasa, Art thou not of my bone, and of my flesh? God do so to me, and more also, if thou be not captain of the host before me continually in the room of Joab.
1 Chronicles 2:17
17 And Abigail bore Amasa: and the father of Amasa was Jether the Ishmaelite.