I think he probably meant the one in the Bible, not the one by Heinlein. Both depict an innocent mortal being screwed around by Them Upstairs, but in RAH's version it turns out that it's the Devil who is testing him - JHVH stopped bothering with such hands-on management long ago.
And he gets much gentler treatment than the biblical Job, who comes over like a total masochist - "Thank you for killing my family, Lord, may I have another?"