Unknown Author
Job 11:4ESV·author unknown

For you say, ‘My doctrine is pure, and I am clean in God’s eyes.’

Matthew Henry Presbyterian @wholebiblehenry

It is sad to see what intemperate passions even wise and good men are sometimes betrayed into by the heat of disputation, of which Zophar here is an instance. Eliphaz began with a very modest preface, Job 4:2. Bildad was a little more rough upon Job, Job 8:2. But Zophar falls upon him without mercy, and gives him very bad language: Should a man full of talk be justified?

Commenting on Job 11:1-6

John Gill Reformed Baptist @doctorgill

For thou hast said,.... What follows is produced to support the charge, especially of lying, which seems to be founded on what he had said in Job 6:10, my doctrine is pure; free from error, unadulterated, unmixed, not blended with Heathenish principles and human doctrines; but tending to purity of heart and life, as every word of God, and doctrine that comes from him, is...

Jamieson-Fausset-Brown Reformed @jfbcommentary

doctrine--purposely used of Job's speeches, which sounded like lessons of doctrine (Deu 32:2; Pro 4:2). thine--addressed to God. Job had maintained his sincerity against his friends suspicions, not faultlessness.