ESV: So King Solomon sent Benaiah the son of Jehoiada, and he struck him down, and he died.
NIV: So King Solomon gave orders to Benaiah son of Jehoiada, and he struck down Adonijah and he died.
NASB: Then King Solomon sent the order by Benaiah the son of Jehoiada; and he struck him so that he died.
CSB: Then King Solomon dispatched Benaiah son of Jehoiada, who struck down Adonijah, and he died.
NLT: So King Solomon ordered Benaiah son of Jehoiada to execute him, and Adonijah was put to death.
KJV: And king Solomon sent by the hand of Benaiah the son of Jehoiada; and he fell upon him that he died.
NKJV: So King Solomon sent by the hand of Benaiah the son of Jehoiada; and he struck him down, and he died.