'Happened' in the Bible

It happened when the ark of the covenant of the Lord came to the city of David, that Michal the daughter of Saul looked out of the window and saw King David leaping and celebrating; and she despised him in her heart.

Then it happened in the spring, at the time when kings go out to battle, that Joab led out the army and ravaged the land of the sons of Ammon, and came and besieged Rabbah. But David stayed at Jerusalem. And Joab struck Rabbah and overthrew it.