'Instant' in the Bible

They spend their days in prosperity. In an instant they go down to Sheol.

But the multitude of your foes will be like fine dust, and the multitude of the ruthless ones like chaff that blows away. Yes, it will be in an instant, suddenly.

therefore this iniquity shall be to you like a breach ready to fall, swelling out in a high wall, whose breaking comes suddenly in an instant.

At what instant I shall speak concerning a nation, and concerning a kingdom, to pluck up and to break down and to destroy it;

At what instant I shall speak concerning a nation, and concerning a kingdom, to build and to plant it;