Job 34:30

That the hypocrite reign not - All this is done to prevent wicked men from ruling over the people. The remarks of Elihu had had respect much to princes and kings, and he had shown that however great they were, they were in the hands of God, and were wholly at his disposal. He “now” says that the design of his dealings with them was to prevent their oppressing their fellow-men. The general scope of the remarks of Elihu is, that God is the universal Sovereign; that he has all people under his control, and that there are none so powerful as to be able to resist his will. The remark in this verse is thrown in, not as illustrating this general sentiment, but to show what was “in fact” the aim for which he thus interposed - to save people from being oppressed and crushed by those in authority.

Lest the people be ensnared - Hebrew “From their being snarers of the people.” He thrusts down the mighty, in order that they may not be left to take the people as wild beasts are taken in the toils. They were disposed to make use of their power to oppress others, but God interposes, and the people are saved. For a fuller view of this verse, see the remarks of Rosenmuller.