2 Kings 10:14

And he said, to his companions, the members of his guard, Take them alive. And they took them alive, captured them in spite of any show of resistance, and slew them at the pit of the shearing-house, at the cistern, even two and forty men; neither left he any of them. Since they were friendly to the house of Ahab, he feared that they might resist his royal authority, and therefore he chose the simplest and most effective method to get rid of them. It was the judgment of God upon idolatrous people.