Job 4:20

from morning to evening i. e. from a morning to an evening, in the course of a single day, cf. Isaiah 38:12. They are short-lived as ephemerids.

without any regarding i. e. without any one noticing it; so insignificant and of no account are they, that they pass away unobserved, like ephemeral insects. The words might mean, without any of them laying to heart; they are thoughtless in their sinful levity, an idea parallel to "without wisdom" in the next verse. Job 4:19 described how easilymen are destroyed, this verse describes how soon. All is meant to widen the chasm between men and God, and by giving Job right thoughts of God, and of himself a man, to bring back his mind to a becoming attitude towards Heaven.