'Lord's' in the Bible

Then Jehoiada made a covenant between the Lord and the king and the people, that they would be the Lord’s people, also between the king and the people.

He said, “Open the window toward the east,” and he opened it. Then Elisha said, “Shoot!” And he shot. And he said, “The Lord’s arrow of victory, even the arrow of victory over Aram; for you will defeat the Arameans at Aphek until you have destroyed them.”

Have I now come up without the Lord’s approval against this place to destroy it? The Lord said to me, ‘Go up against this land and destroy it.’”’”