This purification ceremony is somewhat like the one Jimmy performed at St. Andrew's Church, just not as grand. However, with the Church's Holy Relic blessing, the energy was obviously much stronger than their temporarily set-up purification ceremony. After finally cleansing the wounds with Holy Water, they were bandaged. As for Jimmy, his scratches didn't really affect him, no need for bandaging, just a simple cleaning and disinfection.
The blood-stained Dagger was also arranged by the Priest to be cleaned with Holy Water, though it's uncertain whether it had been thoroughly purified, so it was left there temporarily.
