King James Version
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.English Standard Version
So shall their blood come back on the head of Joab and on the head of his descendants forever. But for David and for his descendants and for his house and for his throne there shall be peace from the LORD forevermore."New International Version
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."