This ritual blesses human blood and transforms it into purified blood, a most vital component for performing the Demon Curing Ritual. This ritual was performed by an unnamed priest to bless some amount of human blood, which was later used by Sam to cure Dean.
To bless the human blood, the user must hold a rosary and recite a Latin verse to the blood container:
- Hunc sanguinem sacro, et donantibus sanguinem, debita dimitto.
- Dolorem remitteat, et voluntati dei serviat.