Job

He went through severe trials but did not curse God. But he did question Him.

Among the many lessons I glean from the book is bad theology that bad things don't happen to good people.

Satan presents himself before God and God points out Job's righteousness. God was pleased with Job.

Satan challenges God. He insists that Job's righteousness is a direct consequence of blessing and favoring him. If his circumstances were different he'd end up cursing God he claims.

Job 1:9-11 (KJV)
9 Then Satan answered the Lord, and said, Doth Job fear God for nought?

10 Hast not thou made an hedge about him, and about his house, and about all that he hath on every side? thou hast blessed the work of his hands, and his substance is increased in the land.

11 But put forth thine hand now, and touch all that he hath, and he will curse thee to thy face.

According to Calvinism, Job's faith and righteous service is wholly due to God's irresistible (or @TCassidy's 'efficacious') grace. He is the direct cause of Job's faith and righteousness.

But if this is the case, does the test/trial make any sense? And exactly what is being tested, Job's faith or God's ability to persevere Job's faith through trial?

What's the point of God 'bragging' ? Is He essentially saying, 'Have you seen how strongly I have fortified Job's faith in me'?

Or was Satan simply ignorant of @TCassidy 's 'efficacious grace'

Or maybe Satan knows about 'efficacious grace' and it's near perfect counterfeits but he can't tell them apart so he throws in trials to distinguish them.

Either way, the confrontation and especially God's confidence in something he has already sealed/decreed/secured seems odd