'Suddenly' in the Bible

Then all the assembly made a covenant in the house of God with the king [that is, with the child Joash, to overthrow Athaliah by proclaiming his sovereignty]. And Jehoiada [the priest] said to them, “Behold, the king’s son [Joash] shall reign, as the Lord has said in regard to the sons of David.

Then Hezekiah and all the people rejoiced because of what God had prepared for the people, for the thing came about suddenly.