'Iniquity' in the Bible

I've told him that I'm about to judge his family forever because of the iniquity that he knew about. His sons committed blasphemy and he did not rebuke them.

Therefore I've sworn concerning Eli's family that the iniquity of his family is not to be atoned for by sacrifice or offering forever."

Indeed, rebellion is the sin of divination, and arrogance is iniquity and idolatry. Because you have rejected this message from the LORD, he has rejected you from being king."

Now, show gracious kindness to your servant because you have entered into a sacred covenant with your servant. If there is iniquity in me, then kill me yourself why should you bring me to your father?"