John Gill Commentary Job 21:1

"Then Job answered and said," — Job 21:1 (ASV)

But Job answered and said .
] In reply to what Zophar had asserted, concerning the prosperity of the wicked being only for a short time, (Job 20:5) ; the contrary to which he most clearly proves, and that in many instances their prosperity continues as long as they live; that they die in it, and it is enjoyed by their posterity after them.