No way of knowing

I'd forgotten what a chore it is to do research on Job. Not because there's too much material on the Biblical figure (though there is), but because there's many times more material on jobs. So I've found a dozen versions of The Book of Job Descriptions, The Book of Government Jobs, The Book of Job Interview Tips; job listings for Eustace, TX (I was searching for St. Eustace, whose story is Job-shaped); and, funniest of all, a bulletin for job offerings for Knights Templar in Britain (Job was patron of the Knights Templar a very long time ago) - who knew they were still around, let alone have a public website! No, in fact the funniest of all is putatively about the Biblical character, the children's book Tried and True Job which starts:

Job got up in the morning,
Had some food, and got dressed.
He had no way of knowing
He was starting a test.