2 Corinthians 7:1

Therefore, since we have these promises, dear friends, let us purify ourselves from everything that contaminates body and spirit, perfecting holiness out of reverence for God.

Not sure if you can read the words on the "land"
Sexual Immorality
Judging
Murder
Pride
Cheating
Lying
Excess
Idol Worship.... 
just to list a few....


I wanted all the washer thingies hanging over head to have scripture but it was already REALLY busy and you couldn't have read it anyway so just imagine that the Bible on top is doing the "washing".