From The Long Lost Friend:
A Well-Tried Charm
Three holy drops of blood have passed down the holy cheeks of the Lord God, and these three holy drops of blood are placed before the touchhole. As surely as our dear lady was pure from all men, as surely shall no fire or smoke pass out of this barrel. Barrel, do thou give neither fire, nor flame, nor heat. Now I will walk out, because the Lord God goeth before me; God the Son is with me, and God the Holy Ghost is about me forever.
Timeline of related events
1820Publication of Hohmann's Long Lost Friend (lists this spell)