It is a passionate desire that all iniquity be taken away from me and that all sin be purged from me; from all of me.
Now considering sin. Though we normally and simply define sin as "missing the mark," we need to have a much better understanding.
When he had thus spoken, he spat on the ground, and made clay of the spittle, and he anointed the eyes of the blind man with the clay, And said unto him, Go, wash in the pool of Siloam, (which is by interpretation, Sent.) He went his way therefore, and washed, and came seeing.
I think a true understanding of sin and iniquity would absolutely horrify us into abject silence and despair the likes of which we could never imagine.
There is much more to this than I realized.