Therefore they shall be as the morning cloud, and as the early dew that passeth away, as the chaff that is driven with the whirlwind out of the floor, and as the smoke out of the chimney.
Therefore they shall be as the morning cloud, and as the early dew. - (Hosea 6:4 "Your goodness is as a morning cloud, and as the early dew it goeth away"). As their "goodness" soon vanished like the morning cloud and dew, so they shall perish like them. Just retribution in kind.
As the chaff that is driven with the whirlwind out of the floor - the threshingfloor, generally an open area on a height, exposed to the winds.
And as the smoke out of the chimney - generally in the East an orifice in the wall, at once admitting the light and giving egress to the smoke.