What is Yinhak?
Rashi: It is screaming.
Ibn Ezra: We do not find like this in Tanach. It seems that it is an expression of darkening.
What is Iyov coming to say?
Rashi: Do I scream for nothing?! A foolish animal does not scream when it has grass. An ox does not scream when it has grain.
Ibn Ezra: One who is serene does not scream or worry, e.g. you friends 1 of mine!
Devar Eliyahu: He discusses Pere, which is not domesticated at all, and an ox, which lives among people, but its nature is fierce. We find like this in people. Some know nothing about ways of the world, etiquette and conduct. Others know all this, but their hearts are rocks and they are brazen to people - he does not treat a Zaken better than anyone else. Elifaz said "ha'Nisah Davar Elecha Sil'eh" (4:2; do you weary because Hashem tested you in one matter?!) Both of these kinds of people [are calm when all is fine for them].
Malbim: A Pere eats inferior food - grass. It does not scream 'how will I eat bland food, without salt?!' For an ox, people mix in Chalamos - a moist, tasteless vegetable. It does not despise it. I despise even good, tasty food!
This is plural, even though only Elifaz answered. Perhaps he assumed that the others agree, for they were silent. (PF)
What is "Belilo"?
Ibn Ezra: This is [grain,] like "va'Yibal la'Chamorim", "Belil Chamitz."
