Charles Ellicott Commentary Isaiah 66:4

"I also will choose their delusions, and will bring their fears upon them; because when I called, none did answer; when I spake, they did not hear: but they did that which was evil in mine eyes, and chose that wherein I delighted not." — Isaiah 66:4 (ASV)

I also will choose their delusions ... —The Hebrew noun conveys the thought of the turnings and windings of fortune—what has been called the irony of history. These are the instruments with which God, as it were, mocks and holds in derision those who mock Him by their hypocrisy. Their choice did not delight Him; what He chooses will be far from delightful for them. (Proverbs 1:24–26.)