'Wash' in the Bible

I will wash mine hands in innocency: so will I compass thine altar, O LORD:

Wash me throughly from mine iniquity, and cleanse me from my sin.

Purge me with hyssop, and I shall be clean: wash me, and I shall be whiter than snow.

The righteous shall rejoice when he seeth the vengeance: he shall wash his feet in the blood of the wicked.

Moab is my wash basin; over Edom I will throw my shoes; over Philistia I will celebrate my triumph."

Did I purify my heartand wash my hands in innocence for nothing?

Moab is my wash basin. I will make Edom serve me. I will shout in triumph over Philistia."