'Iniquity' in the Bible

Now I have told him that I am about to judge his house forever for the sinful behavior which he knew [was happening], because his sons were bringing a curse on themselves [dishonoring and blaspheming God] and he did not rebuke them.

Therefore I have sworn to the house of Eli that the sinful behavior of Eli’s house (family) shall not be atoned for by sacrifice or offering forever.”