New Revised Standard Version
The LORD will bring back his bloody deeds on his own head, because, without the knowledge of my father David, he attacked and killed with the sword two men more righteous and better than himself, Abner son of Ner, commander of the army of Israel, and Amasa son of Jether, commander of the army of Judah.

New American Bible
The LORD will bring blood upon his own head, because he struck down two men better and more just than himself, and slew them with the sword without my father David’s knowledge: Abner, son of Ner, commander of Israel’s army, and Amasa, son of Jether, commander of Judah’s army.

Douay-Rheims Bible
And the Lord shall return his blood upon his own head; because he murdered two men, just and better than himself: and slew them with the sword, my father, David, not knowing it; Abner, the son of Ner, general of the army of Israel, and Amasa, the son of Jether general of the army of Juda;

And the Lord shall return his blood upon his own head; because he murdered two men, just and better than himself: and slew them with the sword, my father, David, not knowing it; Abner, the son of Ner, general of the army of Israel, and Amasa, the son of Jether general of the army of Juda;

return

1 Kings 2:44 And the king said to Semei: Thou knowest all the evil, of which thy heart is conscious, which thou didst to David, my father: the Lord hath returned thy wickedness upon thy own head.

Genesis 4:11 Now therefore cursed shalt thou be upon the earth, which hath opened her mouth and received the blood of thy brother at thy hand.

Judges 9:24,57 And to lay the crime of the murder of the seventy sons of Jerobaal, and the shedding of their blood, upon Abimelech, their brother, and upon the rest of the princes of the Sichemites, who aided him. . . .

Psalm 7:16 His sorrow shall be turned on his own head: and his iniquity shall come down upon his crown.

two men

2 Samuel 3:27 And when Abner was returned to Hebron, Joab took him aside to the middle of the gate, to speak to him treacherously: and he stabbed him there in the groin, and he died, in revenge of the blood of Asael his brother.

2 Samuel 20:10 But Amasa did not take notice of the sword, which Joab had, and he struck him in the side, and shed out his bowels to the ground, and gave him not a second wound, and he died. And Joab, and Abisai his brother pursued after Seba the son of Bochri.

more righteous

1 Samuel 15:28 And Samuel said to him: The Lord hath rent the kingdom of Israel from thee this day, and hath given it to thy neighbour who is better than thee.

2 Samuel 4:11 How much more now when wicked men have slain an innocent man in his own house, upon his bed, shall I not require his blood at your hand, and take you away from the earth?

2 Chronicles 21:13 But hast walked in the ways of the kings of Israel, and hast made Juda and the inhabitants of Jerusalem to commit fornication, imitating the fornication of the house of Achab, moreover also thou hast killed thy brethren, the house of thy father, better men than thyself,

Esther 1:19 If it please thee, let an edict go out from thy presence, and let it be written according to the law of the Persians and of the Medes, which must not be altered, that Vasthi come in no more to the king, but another, that is better than her, be made queen in her place.

my father

2 Samuel 3:26,37 Then Joab going out from David, sent messengers after Abner, and brought him back from the cistern of Sira, David knowing nothing of it. . . .

Abner

2 Samuel 3:27 And when Abner was returned to Hebron, Joab took him aside to the middle of the gate, to speak to him treacherously: and he stabbed him there in the groin, and he died, in revenge of the blood of Asael his brother.

Amasa

2 Samuel 20:10 But Amasa did not take notice of the sword, which Joab had, and he struck him in the side, and shed out his bowels to the ground, and gave him not a second wound, and he died. And Joab, and Abisai his brother pursued after Seba the son of Bochri.

Jether

1 Kings 2:5 Thou knowest also what Joab, the son of Sarvia, hath done to me, what he did to the two captains of the army 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 on his girdle that was about his loins, and in his shoes that were on his feet.

2 Samuel 17:25 Now Absalom appointed Amasa in Joab's stead over the army: and Amasa was the son of a man who was called Jethra, of Jezrael, who went in to Abigail the daughter of Naas, the sister of Sarvia who was the mother of Joab.

Ithra