While the holy water fonts are emptied from the Mass of the Lord’s Supper until they are refilled with water blessed at the Easter Vigil, they should not be emptied prior to Holy Thursday. The following letter from the Congregation for Divine Worship and the Discipline of the Sacraments rejects this practice. Note the strong bias (reason 1) against inventing practices not called for in the liturgical law. Forcibly rejected is the argument used by some to justify their abuses that “It is not forbidden, so I can do it.” In reality, no one may do in that liturgy that which is not prescribed by the Church, specifically the Apostolic See, who alone has authority over it (SC 22, canon 838.