Albert Barnes Commentary Isaiah 31:2

"Yet he also is wise, and will bring evil, and will not call back his words, but will arise against the house of the evil-doers, and against the help of them that work iniquity." — Isaiah 31:2 (ASV)

Yet he also is wise- God is wise. It is in vain to attempt to deceive him, or to accomplish such purposes without his knowledge.

And will bring evil- The punishment which is due to such want of confidence in him.

But will arise against the house of the evil-doers- This is a general proposition, and it is evidently just as true now as it was in the time of Isaiah.