Charles Ellicott Commentary Job 21:9

"Their houses are safe from fear, Neither is the rod of God upon them." — Job 21:9 (ASV)

Their houses are safe from fear. —On the contrary, Zophar had just said that “a fire not blown should consume him” (Job 20:26), and Bildad that “destruction should dwell in his tabernacle, and brimstone be scattered on his habitation.”