breath
That is, by His anger, as (Isaiah 30:33); (Exodus 15:8); (Job 1:19); (Job 15:30); (Isaiah 11:4); (2 Thessalonians 2:8).
Related Commentaries of Job 4:9
Job 4:9
9 By the blast of God they perish, and by the breatha of his nostrils are they consumed.