1 Chronicles 2:17

And Abigail bore Amasa; and the father of Amasa was Jether the Ishmaelite.

2 Samuel 17:25

And Absalom set Amasa over the host instead of Joab; which Amasa was the son of a man whose name was Jithra the Israelite, that went in to Abigail the daughter of Nahash, sister to Zeruiah, Joab's mother.

2 Samuel 19:13

And say to Amasa, Art thou not my bone and my flesh? God do so to me and more also, if thou be not captain of the host before me continually instead of Joab.

2 Samuel 20:4-12

And the king said to Amasa, Call me the men of Judah together within three days, and do thou attend here.

1 Kings 2:5

And thou knowest also what Joab the son of Zeruiah did to me, what he did to the two captains of the hosts of Israel, to Abner the son of Ner, and to Amasa the son of Jether, whom he slew, and shed the blood of war in peace, and put the blood of war upon his girdle that was about his loins, and upon his sandals that were on his feet.

1 Kings 2:32

And Jehovah shall requite the blood which he shed upon his own head, because he fell upon two men more righteous and better than he, and slew them with the sword, without my father David's knowledge: Abner the son of Ner, captain of the host of Israel, and Amasa the son of Jether, captain of the host of Judah.

Treasury of Scripture Knowledge

Summary

And Abigail bare Amasa: and the father of Amasa was Jether the Ishmeelite.

Bible References

Amasa

2 Samuel 17:25
And Absalom set Amasa over the host instead of Joab; which Amasa was the son of a man whose name was Jithra the Israelite, that went in to Abigail the daughter of Nahash, sister to Zeruiah, Joab's mother.
2 Samuel 19:13
And say to Amasa, Art thou not my bone and my flesh? God do so to me and more also, if thou be not captain of the host before me continually instead of Joab.
2 Samuel 20:4
And the king said to Amasa, Call me the men of Judah together within three days, and do thou attend here.
1 Kings 2:5
And thou knowest also what Joab the son of Zeruiah did to me, what he did to the two captains of the hosts of Israel, to Abner the son of Ner, and to Amasa the son of Jether, whom he slew, and shed the blood of war in peace, and put the blood of war upon his girdle that was about his loins, and upon his sandals that were on his feet.