"Therefore I abhor myself, and repent in dust and ashes" (42:6). What does Job repent of?

The verse doesn't say, and Christians read it in more than one way. Here is what the text gives. The verse begins "Therefore", after "I had heard of you by the hearing of the ear, but now my eye sees you" (42:5); a few verses earlier Job said, "I have uttered that which I didn’t understand, things too wonderful for me, which I didn’t know" (42:3). For abhor, Brown-Driver-Briggs gives "reject, refuse" and "despise" (tap abhor). For repent, in the form used in 42:6, the lexicon lists among the verb's senses "be sorry, rue, suffer grief, repent", and also "comfort oneself, be comforted"; the abridged lexicon doesn't say which it gives to 42:6 (tap repent). The verb comes six more times in Job, always in another form, which Brown-Driver-Briggs gives as "comfort, console", and there the WEB gives it as comfort or console (2:11, 16:2, 42:11). In the next verse the LORD says Job has spoken of him "the thing that is right" (42:7). The chapter doesn't name what Job turns from, and these notes don't choose a reading.