Psalm 26:6 declares washing hands in innocence, directly mirroring the elders' action to assert innocence in Deuteronomy 21:6.

Psalm 51:14 specifically asks deliverance from bloodguiltiness, the same issue addressed by the handwashing ritual in Deuteronomy 21:6 for unsolved murder.

Psalm 73:13 describes washing hands in innocence, directly alluding to the declaration of innocence in Deuteronomy 21:6's handwashing ritual.

Jeremiah 2:22 warns that no amount of washing can remove moral guilt, contrasting the ritual cleansing in Deuteronomy 21:6 which only covered ceremonial bloodguilt.

In Matthew 27:24, Pilate washes his hands declaring innocence of blood, mirroring the elders' handwashing in Deuteronomy 21:6.

Matthew 27:25 shows the crowd accepting bloodguilt, the opposite of the elders' declaration of innocence in Deuteronomy 21:6.

Psalm 51:7 uses 'wash me' and 'hyssop' (purification ritual), linking to the handwashing ceremony in Deuteronomy 21:6 as a type of cleansing from guilt.

In Psalm 51:2, the plea for washing from iniquity echoes the ritual handwashing for bloodguilt in Deuteronomy 21:6, but shifts from external to internal cleansing.

Hebrews 9:10 refers to 'various washings' of the OT, which include the handwashing ritual in Deuteronomy 21:6 as temporary regulations.