Therefore they will be like the morning cloud, And like the dew that passes away early, Like the chaff that is driven with the whirlwind out of the threshing floor, And like the smoke out of the chimney.
"As the morning cloud ..."  This figure is used in both testamentst and notably by James (James 4:13ff) in the New Testament. Nothing could be more ephemeral than a vanishing cloud in the early morning.