Charles Ellicott Commentary Job 21:20

"Let his own eyes see his destruction, And let him drink of the wrath of the Almighty." — Job 21:20 (ASV)

His eyes shall see his destruction. —This may be understood as the continuation of Job’s suggested amendment of the Divine government: “His own eyes should see his destruction, and he should drink of the wrath, etc. For what concern or interest has he in his house after him when the number of his months is cut off, etc.?”