'Murdered' in the Bible

Thus Joash the king did not remember the kindness which his father Jehoiada had shown him, but he murdered his son. And as he died he said, “May the Lord see and avenge!”

When they had departed from him (for they left him very sick), his own servants conspired against him because of the blood of the son of Jehoiada the priest, and murdered him on his bed. So he died, and they buried him in the city of David, but they did not bury him in the tombs of the kings.