Adam Clarke on Job 17:6

He hath made me also a by-word - My afflictions and calamities have become a subject of general conversation, so that my poverty and affliction are proverbial. As poor as Job, As afflicted as Job, are proverbs that have even reached our times and are still in use.

Aforetime I was as a tabret - This is not the translation of the Hebrew ותפת לפנים אהיה vethopheth lephanim eheyeh. Instead of לפנים lephanim, I would read לפניהם liphneghem, and then the clause might be translated thus: I shall be as a furnace, or consuming fire (Topheth) before them. They shall have little reason to mock when they see the end of the Lord's dealings with me; my example will be a consuming fire to them, and my false friends will be confounded. Coverdale translates thus: He hath made me as it were a byworde of the comon people. I am his gestinge stocke amonge them.