'Swiftly' in the Bible

Heaven and earth will testify against what has occurred today: you'll surely and swiftly be destroyed from the land that you are about to possess by crossing the Jordan River. You won't live long in it, because you'll certainly be exterminated.

because they will turn your sons away from Me to worship other gods. Then the Lord’s anger will burn against you, and He will swiftly destroy you.

But understand that today the Lord your God will cross over ahead of you as a consuming fire; He will devastate and subdue them before you. You will drive them out and destroy them swiftly, as the Lord has told you.

The wrath of God will burn against you so that he will restrain the heavens and it won't rain. The ground won't yield its produce and you'll be swiftly destroyed from the good land that the LORD is about to give you.