Robert D. Bell, The Theological Messages of the Old Testament Books (Greenville, SC: Bob Jones University Press, 2010), 204–18 (formatting added):

Regarding Man

• 1. Man is a sinner.
• 2. It is possible for a human to serve God piously with unselfish singlemindedness.

Regarding Satan

• 3. Satan investigates the men of the earth.
• 4. Satan accuses the saints before God.
• 5. Satan is as cruel as possible to the saints.
• 6. Satan can work his evil only as God allows him.

Regarding God

• 7. God notices and values the righteousness of the saints.
• 8. God is good and therefore just.
• 9. God is the powerful sovereign Creator.
• 10. God is wise beyond man’s comprehension.

Regarding Revelation

• 11. God has revealed Himself to mankind.
• 12. The truth about God is not always evident from outward circumstances.

Related:

1. Bob Bell’s Magnum Opus
2. Recommended Reading on Job
3. Ch. 4 in From Typology to Doxology
4. God Doesn’t Have Creditors (Job 41:10–11) | sermon outline | 11/27/2011