A colossal failure!, page-22

Even in his fallen state of imperfection Job was able to demonstrate his unbreakable loyalty. There is to be an unnumbered "great crowd" that will do likewise in our day.

Job and the "great crowd" are imperfect because that is the way they are/were made - according to doctrine at any rate. They could only behave according to the way that they were made. This has already been pointed out to you by another poster.

So if we consider what this means. It means that God enable humans to become sick because that is the way that he made them and then commanded them, on pain of eternal death, to get better.

Then look what God subjected Job to in order to demonstrate his unbreakable loyalty - which included murder. God certainly used his omnipotent powers to torture Job but not to stop Satan; he rather enabled Satan to carry out the evil deeds on his (God's) behalf. Of course God didn't use his omniscient powers to know that Jacob had unbreakable loyalty - he preferred instead to play silly but cruel games with Satan using Job as a pawn.