'Exercise' in the Bible

And he searched for Ahaziah and captured him. And he was hiding in Samaria. And they brought him to Jehu and put him to death. And they buried him, for they said, "He [is] the descendant of Jehoshaphat, who sought Yahweh with his whole heart." And the house of Ahab had no one to exercise power over the kingdom.

And who knows [whether] he will be wise or foolish? Yet he will exercise control of all [the fruit of] my toil with which I toiled wisely under the sun. This also [is] vanity!