'Iniquity' in the Bible

we have sinned, and have committed iniquity, and have done wickedly, and have rebelled, even turning aside from thy commandments and from thine ordinances.

Seventy weeks are apportioned out upon thy people and upon thy holy city, to close the transgression, and to make an end of sins, and to make expiation for iniquity, and to bring in the righteousness of the ages, and to seal the vision and prophet, and to anoint the holy of holies.