The gesture of the priest washing his hands during Mass has a meaning beyond hygiene.
The ritual of hand washing during Mass is inspired by Psalm 51 which says, "Wash me thoroughly from my iniquity, and cleanse me from my sin" (Psalm 51:4).
As explained by Saint Cyril of Jerusalem in his Catechesis, the act of washing hands by the deacon, priest, and presbyters around the altar is not for physical cleanliness, but rather a symbol of spiritual purity and liberation from all sin. This act signifies the purity of actions and being free from all guilt.
The Catholic priest, by washing his hands during the liturgical ceremony, symbolizes the purification of both exterior and interior sins.
This act benefits not only the priest, but also all the faithful who participate in the celebration. During the ritual, all present prepares themselves mentally and spiritually for Christ in the Eucharist.
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