Amasa was not on his guard against the dagger in Joab's hand, and Joab plunged it into his belly, and his intestines spilled out on the ground. Without being stabbed again, Amasa died. Then Joab and his brother Abishai pursued Sheba son of Bikri.
NIV
But Amasa did not notice the sword in Joab's hand. So [Joab] struck him [who was to have been his successor] with it in the body, shedding his bowels to the ground without another blow; and [soon] he died. So Joab and Abishai his brother pursued Sheba son of Bichri.
AMP
But Amasa took no heed to the sword that was in Joab's hand: so he smote him therewith in the fifth rib, and shed out his bowels to the ground, and struck him not again; and he died. So Joab and Abishai his brother pursued after Sheba the son of Bichri.
KJV
Then the king commanded Benaiah, "Do as he says. Strike him down and bury him, and so clear me and my family line of the guilt of the innocent blood that Joab shed."
NIV
The king said to him, Do as he has said. Strike him down and bury him, that you may take away from [me and from] my father's house the innocent blood which Joab shed.
AMP
And the king said unto him, Do as he hath said, and fall upon him, and bury him; that thou mayest take away the innocent blood, which Joab shed, from me, and from the house of my father.
KJV
"May the guilt of their blood rest on the head of Joab and his descendants forever. But on David and his descendants, his house and his throne, may there be the LORD's peace forever."
NIV
So shall their blood return upon the head of Joab and of his descendants forever. But upon David, his descendants, his house, and his throne, there shall be peace from the Lord forever.
AMP
Their blood shall therefore return upon the head of Joab, and upon the head of his seed for ever: but upon David, and upon his seed, and upon his house, and upon his throne, shall there be peace for ever from the LORD.
KJV
