'Iniquity' in the Bible

Is the wrongdoing (idolatry) of Peor not enough for us, from which we have not cleansed ourselves to this day, even though the affliction [in which twenty-four thousand died] came on the congregation of the Lord,

Did not Achan the son of Zerah act unfaithfully in the things under the ban, and [as a result God’s] wrath came on the entire congregation of Israel? And that man did not perish alone in his wrongdoing.’”