Jamieson, Fausset and Brown on Isaiah 66:4

4. delusions--(2Th 2:11), answering to "their own ways" (Is 66:3; so Pr 1:31). However, the Hebrew means rather "vexations," "calamities," which also the parallelism to "fears" requires; "choose their calamities" means, "choose the calamities which they thought to escape by their own ways."

their fears--the things they feared, to avert which their idolatrous "abominations" (Is 66:3) were practised.

I called ... none ... answer--(See on Is 65:12; Is 65:24; Jr 7:13).

did ... chose--not only did the evil deed, but did it deliberately as a matter of choice (Ro 1:32). "They chose that in which I delighted not"; therefore, "I will choose" that in which they delight not, the "calamities" and "fears" which they were most anxious to avert.

before mine eyes--(See on Is 65:3).