'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 children from me to serve other gods so that the LORD's anger blazes against you and swiftly destroys you by fire.

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.