'Mist' in the Bible

Now, watch! The hand of the Lord is on you, and you will be blind, [so blind that you will be] unable to see the sun for a time.” Immediately a mist and darkness fell upon him, and he groped around, seeking people to lead him by the hand.

Yet you do not know [the least thing] about what may happen in your life tomorrow. [What is secure in your life?] You are merely a vapor [like a puff of smoke or a wisp of steam from a cooking pot] that is visible for a little while and then vanishes [into thin air].