John 13:9
Simon Peter [then] said to Him, "Lord, do not [just] wash my feet only, but my hands and head, too."
Matthew 27:24
So, when Pilate saw that he was not convincing anyone, but that a riot was brewing instead, he took water and washed his hands in front of the crowd saying, "I am not responsible for this man's blood. [Note: Some ancient manuscripts say "righteous man's blood"]. You tend to the matter."
Hebrews 10:22
we should draw close [to God] with a sincere heart and a fully assured faith, having had our hearts sprinkled from a guilty conscience [See 9:13-14] and having had our bodies washed with clean water [i.e., in our immersion].
1 Peter 3:21
This water prefigured immersion [into Christ], which now also saves you, not by removing dirt from the [physical] body, but [by serving] as an appeal [or, "pledge"] to God for a clear conscience through the raising of Jesus Christ from the dead.