Unknown Author
Job 17:12ESV·author unknown

They make night into day: ‘The light,’ they say, ‘is near to the darkness.’

Matthew Henry Presbyterian @wholebiblehenry

Job's friends had pretended to comfort him with the hopes of his return to a prosperous estate again; now he here shows, I. That it was their folly to talk so (Job 17:10): "Return, and come now, be convinced that you are in an error, and let me persuade you to be of my mind; for I cannot find one wise man among you, that...

Commenting on Job 17:10-16

John Gill Reformed Baptist @doctorgill

They change the night into day,.... Meaning either his friends, by what they had said unto him, or the thoughts of his heart, which comes to the same sense; these being in the night season employed about what had been said to him in the day, insomuch that he could get no sleep, the night was as broad day unto him; or they put the...

Jamieson-Fausset-Brown Reformed @jfbcommentary

They--namely, "my friends." change the night into day--that is, would try to persuade me of the change of my misery into joy, which is impossible [UMBREIT] (Job 11:17); (but) the light of prosperity (could it be enjoyed) would be short because of the darkness of adversity.